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second semester final review
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116
Science
9th Grade
05/28/2013

Additional Science Flashcards

 


 

Cards

Term

Global warming 

 

what is global warming?

Definition

Global warming is the rise in the average temperature of Earth's atmosphere and oceans. primarily caused by increasing concentrations of greenhouse gases produced by human activities such as the burning of fossil feuls.

Term

Carbon Dioxide

 

what is carbon dioxide composed of? 

Definition
Carbon dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom.
Term

Green house Effect

 

What is the effect of green house grasses?

Definition
The result of green house gases is an elevation of the average surface temperature above what it would be in the absence of the gases.
Term

Green house gases

 

What are green house gases and their effect?

Definition
is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. Greenhouse gases greatly affect the temperature of the earth.
Term

Mantle

 

What is a mantle and where is it located?

Definition
The mantle is a rocky layer of earth located Between the crust and core.
Term

Crust

 

why is the crust so important and where is it located?

 

 

 

Definition
The crust is important because it is the layer that we live on. It is the first layer on planet earth.
Term

Inner and Outer core

 

where are they located and how are they different?

 

Definition

The inner core is located directly in the middle of earth and the outer core is right outside. The inner core is solid the outer is liquid.

 

Term

Asthenosphere


what is it and where is it located?


Definition
The asthenosphere is a portion of the upper layer of the mantle just below the lithosphere.
Term

Lithosphere

 

what is the lithosphere composed of?

Definition
The lithosphere is the solid, rocky layer covering the entire surface of the planet, composed of the crust and the hard uppermost mantle.
Term

Convection current

 

What are convection currents and what can it transfer too?

 

Definition
convection is the concerted, collective movement of ensembles of molecules within fluids. transfers into heat.
Term

Alfred wegner 

 

what was he know for?

Definition
Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research.
Term

Theory of continental drift

 

what is the theory and what prove to they have?

 

 

 

Definition
the theory is that all the continents were once together. They fit together, plant life, and also the same type of plants and rocks were found on different continents.Rocks that were formed at different places on the Earth's surRocks that were formed at different places on the Earth's surface have different magnetiface have different magnetizations. 
Term

Convregent plate boundries 

 

what are they and what do they cause?

 

 

 

Definition
a convergent boundary, also known as a destructive plate boundary (because of subduction), is an actively deforming region where two or more tectonic plates or fragments of lithosphere move toward one another and collide. As a result of pressure, friction, and plate material melting in the mantel, earthquakes and volcanoes.
Term

Divergent plate boudaries

 

what are they and what do they cause?

Definition
divergent boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continets initially produce rifts which produce rift valleys.
Term

Transform fault plate boundaries

 

what are they and what do they cause?

 

Definition
is a type of fault whose relative motion is predominantly horizontal in either direction. Furthermore, transform faults end abruptly and are connected on both ends to other faults, ridges, or subduction zones.
Term

Theory of plate teconics

 

what is the theory of plate tectonics and what is the evidence?

 

Definition
 A scientific thoery that describes the large-scale motions of earths lithosphere The model builds on the concepts of continetal drift, developed during the first decades of the 20th century. The shapes of many continents are such that they look like they are separated pieces of a jig-saw puzzle,Many fossil comparisons along the edges of continents that look like they fit together suggest species similarities that would only make sense if the two continents were joined at some point in the past. There is a large amount of seismic, volcanic, and geothermal activity along the conjectured plate boundaries. 
Term

Earthquakes

 

what causes earthquakes and where do most tak place?

 

Definition
An earthquake is what happens when two blocks of the earth suddenly slip past one another. Most earthquakes occur along the edge of the oceanic and continetal plates.
Term

Elastic rebound theory

 

what is the elastic rebound theory?

Definition
The elastic rebound theory is an explanation for how energy is spread during earthquakes.
Term

Earthquake energy

 

where does earthquake energy come from?

Definition
Most earthquakes in our region result directly or indirectly from the convergence of three tectonic plates.
Term

locating earthquakes

 

where are most earthquakes located

Definition
Most earthquakes occur along the edge of the oceanic and continetal plates.
Term

Primary waves

 

what is a primary wave and how do you record it?

Definition

P-waves are a type of elastic wave called seismic wave in seismology, that can travel through a continuum. The continuum is made up of gases (assound waves), liquids, or solids, including the earth. P-waves could be produced by earthquake and recorded by seismograph.

 

Term

Secondary waves

 

what do socondary waves do and how are they recorded?

Definition

 

 S for secondary, comes from the fact that it is the second direct arrival on an earthquake seismogram. S-waves travel slower in rock. and are recorded by seismographs.

Term

Surface waves

 

where do surface waves accur?

Definition

 

 a surface wave is a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities.

Term

seismograms

 

what do seismograms measure?

Definition
A seismograph measures the vibrations made when earth layers "move", such as the waves of movement during an earthquake.
Frequency and amplitude of seismic waves.
 
Term

epicenter

 

what is the epicenter

Definition
The epicenter is the point on the earth's surface that is directly above the hypocenter or focus, the point where an earthquake or underground explosion originates.
Term

focus

 

what is the focus?

Definition
A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system
Term

Mercalli scale

 

what does it measure and how?

Definition
The Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquakemeasures the energy released.
Term

richter scale

 

what does it measure and how?

Definition
The Richter magnitude scale was developed to assign a single number to quantify the energy released during an earthquake.The scale is a base 10 logarithmic scale . The magnitude is defined as the logarithm of the ratio of the amplitude of waves measured by a seismograph to an arbitrary small amplitude.
Term

Earthquake hazards

 

what are some earthquake hazards?

Definition
The first main earthquake hazard is the effect of ground shaking.The second main earthquake hazard is ground displacementThe third main hazard is floodingThe fourth main earthquake hazard is fire.
Term

vocanos

 

what are vocanos and where are most located?

 

Definition

  A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, volcanic ash and gases to escape from the magma chamber below the surface. Volcanoes are generally found where tectonic plates are diverging or converging. 

Term

Ring of fire

 

what is the ring of fire and where is it located?

Definition
The ring of fire is an area where a large number of earthquakes and volcanic eruptions occur.
Term

positive/negative charges

 

when do two objects repel? when do the attrack?

Definition
in order to attrack there has to be a positive and negative charge. If there is 2 positive or 2 negative they will not attrack.
Term

statically charges.

 

explain 3 ways a object can become statically charged.

Definition
When an object loses or gains electron,and the gained charge has no ability or conductor through which it can pass,then it remains as static electricity on that object.
Term

conductors

 

what are good conductors? what are good insulators?

Definition

Metals are the best conductors.


Good conductors: gold, lead, copper, mercury, water, ...etc.
Good Insulators: Rubber, vinyl, wood, glass, plastics, ...etc.

Term

series and parallel circuits.

 

compare and contrast the 2 circuits.

Definition
In a series circuit, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.
Term

Current

 

current is the rate at which charges move through a?

Definition
Current is the rate at which charges move through a conductor.
Term

Ohm's law

 

what is Ohm's law?

Definition
Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference
Term

series and parallel circuit

 

what happens if a light goes out?

Definition
If a bulb goes out in a series circuit the whole thing goes out. If a bulb goes out in a parallel circuit the other bulbs will still be lit.
Term

Thermosphere

Which layer is the Thermosphere directly on top of?

Definition

Mesophere

Term

Ionosphere

Name the three other "Sphere" that are within the Ionosphere.

Definition

Thermosphere, Mesophere, and Exosphere

Term

Water Cycle

Go through the Water Cycle, and explain each step.

 

Definition
  • Evaporation - Water is heated enough to turn into a gas, and rise.
  • Condensation - Water from evaporated water forms clouds.
  • Precipitation - The water is released, causing rain.
  • Surface Runoff - The water comes back to the original source.
  • Transpiration - The water lands on plants, and it is evaporated from them.
Term

Forms of Precipitation

 

What kind of forms of Precipitation are there? 

Definition
  • Drizzle
  • Rain
  • Freezing Drizzle
  • Freezing Rains
  • Snow
  • Ice pellets
  • Hail
  • Sleet
Term

Humidity

What is humidity?

Definition

The amount of water vapor in the air.

Term

Dew Point

Why does Dew form? 

Definition

The heat from the object and the moisture around it cause the dew to form.

Term

High Pressure

What causes High Pressure?

Definition

Downward motion through the Troposphere.

Term

Low Pressure

What happenens to air in a Low Presssure system?

Definition

The air rises and condenses, and forms precipitation.

Term

Low Pressure

What causes Low Pressure in weather?

 

Definition

When airmass warms, either from being over a warm land or ocean surface, or from being warmed by condensation of water vapour in large rain or snow systems

Term

Isobars

What does an Isobar connect?

Definition

Places of equal atmospheric pressure.

Term

Isotherms

What does an Isotherm connect?

Definition

Places with equal temperature

Term

Four Main Types of Air Masses

What are the Four Main Types of Air Masses?

Definition
  • Warm
  • Cold
  • Stationary
  • Occluded Front
Term

Warm Front

What happens in a Warm Front?

Definition

Warm air will slowly move towards and over the slower moving cold mass. This is a slow process so the warm mass will cool slowly and form nimbostratus clouds.

Term

Cold Front

How do Cold Fronts create large cloud bases?

Definition

Cold air will quickly move under the warm causing the warm air to cool and create a large cloud base.

Term

Stationary Front

What are the conditions in a Stationary Front?

 

Definition

Like a warm front, with long soaking rains.-

Term

Stratus Clouds

What do Stratus Clouds look like?

Definition

Sheet like and layered. Like a blanket.

 

Term

Cumulus Cloud

What does a Cumulus Cloud look like? What weather is associated with it?

Definition

White, fluffy, and flat bottom. You'd see it during a sunny day.

Term

Cirrus Clouds

What does a Cirrus Cloud look like? What type of weather is associated with it?

Definition

A Cirrus Cloud looks very thin, and wispy. It is associated with Thunderstorms.

Term

Climate

What is Climate?

Definition

Climate is the pattern of temperature, humidity, atmospheric pressure, precipitation, and other factors. It is the overall weather over a period of time.

Term

Weather

What is the difference between Weather and Climate?

 

Definition

Weather is over a short period of time, while Climate is determined over a long period of time.

Term

3 Main Climate Zones of the World

Describe the 3 Main Climate Zones of the World

 

Definition
  • Polar
    • Coldest. Usually has temp. below 0.
  • Temperate
    • Has most of the landmasses. Has moderate temperatres and rainfall all year.
  • Tropical
    • Has the warmest average, and gets the most rainfall between the 3
Term

Biome

What is a Biome?

Definition

Large area of the Earth that has animals, and plants, that adapt to it.

Term

Desert Biome

What does a Desert Biome look like? What animals live in it?

Definition

A Desert Biome is a very large flat land. There is little to no precipitation in a Desert Biome. The animals that live in a Desert Biome can be: Road Runners, Ostriches, Meerkats, Caracals, Lizards, Snakes, Black Widows, and many more.

Term

Forest Biomes

What animals live in the Forst Biome? What is the climate like?

Definition

Oragatans, Gorillas, Frogs, Toucans, and many more. Rainforests are typically humid.

Term

Tundra Biome

Where is the Grassland Tundra Biome located? What is the climate like?

Definition

It is located around the North and South poles. It is extremely cold climate, temperatures often reach about -50°F in the winter.

Term

Thunder Storm Ingredients

What are the basic ingredients in order to make a thunderstorm?

Definition

You need moisture, unstable air and a lift. Moisture from clouds and rain. Unstable air that is relatively warm and can rise rapidly and lift from fronts, sea breezes or mountains.

Term

Thunderstorm Life Stages

What are the three life stages of a thunderstorm?

Definition
  • Developing
  • Mature
  • Disspiating
Term

Single-Cell Thunderstorm

What is a Single Cell Thunderstorm?

 

Definition

There is only one major source of warm, moist air and the storm ends quickly. This happens because it runs out of fuel. Most common in tropics, where the weather is warm and moist air abounds. Small ones occur almost everyday.

Term

Multi-Cell Thunderstorm

What is a Multi-Cell Thunderstorm

 

Definition

This thunderstorm that has multiple cells. Each at a different stage in the life cycle. One major source is warm and moist air. These end quickly.

Term

Super Cell Thunderstorm

What is a Supercell Thunderstorm?

 

Definition

In this storm the clouds actually break up through the troposhere. This storm has tremendous energy, it can turn into hurricanes and tornadoes.

Term

Squall Line

Describe a Squall Line

Definition

It is a narrow band of high winds and also storms. This is associated with a cold front. 

Term

Lightning

What is Lightning 5 times hotter than?

Definition

The surface of the Sun

Term

Squall line

 

what is the squal line?

Definition
A squall line is a line of thunderstorms that can form along or ahead of a cold front.
Term

thunder

 

how is thunder formed?

Definition
The sudden increase in pressure and temperature from lightning produces rapid expansion of air surrounding and within a bolt of lightning.
Term

tornado

 

how are they formed, where do they most accur

Definition
Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere. A change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere. Rising air within the updraft tilts the rotating air from horizontal to vertical. An area of rotation, 2-6 miles wide, now extends through much of the storm. Most strong and violent tornadoes form within this area of strong rotation.
Term

fujita scale

 

what does this scale measure and how?

Definition
is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation.
Term

hurricane

 

how are hurrricanes formed, where do they most occur?

Definition
Hurricanes only form over really warm ocean water of 80°F or warmer. The atmosphere (the air) must cool off very quickly the higher you go. Also, the wind must be blowing in the same direction and at the same speed to force air upward from the ocean surface. Winds flow outward above the storm allowing the air below to rise. By far most common in the pacific ocean, with the western pacific being most active.
Term

saffir-simpson scale

 

what does it measure?

Definition
It measures the intensities of tropical depressions and tropical storms.
Term

 

saffir-simpson scale

 

what does the scale measure?

 

Definition
The Saffir-Simpson scale rates hurricanes from category 1 to category 5 bases on maximum sustained wind speed.
Term

Kinetic Energy

 

What type of energy is kinetic energy?

Definition
Kinetic energy is the energy of movement or motion.
Term

Formula for Calculating Kinetic Energy 

 

What is the formula for Kinetic Energy?

Definition

The formula for kinetic energy is 1/2 (m)(v) squared.

 

m = Mass

v = Velocity

Term

Potential Energy

 

What type of energy is Potential Energy?

Definition
Potential Energy is the stored energy or energy of gravitional position.
Term

Formula for Calculating Potential Energy 

 

What is the formula for calculating potential energy?

Definition

 

The formula for calculating potential energy is (m)(g)(h).

m = Mass

g = Gravity

h = Height

Term

Chemical Energy 

 

What are some examples of chemical energy? 

 

 

Definition

Biomass

Petroleum

Natural Gas

Propane

Coal

Term

Mechanical Energy

 

To make mechanical energy, this does not need to be included and is included in some other energy sources.

Definition
Electricity
Term

Nuclear Energy 

 

Where is the energy stored in nuclear energy?

Definition
Energy is stored in the nucleus of an atom in nuclear energy.
Term

Electrical Energy

 

True or False:

 

Is lightning electrical energy?

Definition
True
Term

Thermal Energy 

 

True or False: 

 

Running can create thermal energy.

Definition
True
Term

Energy Transformation 

 

What is the energy transformation when you ride your bike?

Definition
Energy Transformation: Mechanical to Motion or Thermal (Heat)
Term

Law of Conservation Of Energy

 

What is the Law of Conservation of Energy?

Definition
The Law of Conservation of Energy is energy cannot be created or destroyed, only transformed.
Term

Formation of Fossil Fuels

 

How are fossil fuels formed?

Definition
Fossil Fuels are formed over millions of year and formed by old vegetation and animals overlapped by each other.
Term

Fossil Fuel Sources 

 

What are the main sources for fossil fuels?

Definition
Coal, Oil, and Natural Gas
Term

Fossil Fuels Primary Uses

 

What are fossil fuels primary uses?

Definition
The primary uses for fossil fuels are used for factories, oil is made into gasoline for cars, and natural gas is used for heating.
Term

Coal

 

What are the stages of coal life?

Definition
Peat, Lignite, Bituminous, and Anthracite.
Term

Alternative Energy

 

What are some examples of alternative energy sources?

Definition

Solar Energy

Wind Energy

Geotherrmal Energy

Biomass

Tidal Energy

Hydroelectric Energy

Term

Solar Energy

 

What are some disadvantages of Solar Energy?

Definition

The amount of sunlight that arrives at the Earth's surface is not constant. It varies depending on location, time of day, time of year, and weather conditions.

 

 

Because the sun doesn't deliver that much energy to any one place at any one time, a large surface area is required to collect the energy at a useful rate.

 

Term

Wind Energy 

 

How is wind turned into electricity?

Definition
Turbine are set up on plains and when the wind blows, it turns the wings which is converted into electricity.
Term

Geothermal Energy 

 

Where is geothermal energy located?

Definition
Geothermal energy is located in the Earth's core and the heat is used to heat homes through deep wells in the ground.
Term

Hydroelectric Energy

 

How does hydroelectric power used to generate energy?

 

Definition
Hydroelectric Dams are
Term

Biomass

 

When burned, what does biomass give off?

Definition
Heat
Term

Tidal Energy

 

Where does tidal energy come from?

Definition
Tidal energy comes from big amount of water in the ocean.
Term

Renewable Energy

 

Which renewable energy source is the most used?

Definition
Hydroelectric
Term

Nonrenewable Energy 

 

What are refineries and what do they do?

Definition
Refineries are factories where they turn oil into gasoline for cars.
Term

Electrons

 

What charge are electrons?

Definition
Negative
Term

Static Electricity 

 

Is static electricity kinetic or potential energy?

Definition
Potential
Term

Static Charge 

 

What are the three causes of static discharge?

Definition
Friction, Conduction, and Induction
Term

Conductors

 

What are the best types of conductors for electricity?

Definition
Electrical Wiring or a Copper Wire
Term

Insulators

 

What is the best type of insulator for electricity?

Definition
Glass and Paper
Term

Coulomb

 

What is the equation for a Coulomb?

Definition
1C = 1F x 1V
Term

Volt

 

What measures volts?

Definition
Voltmeter
Term

Resistance

 

What is Resistance?

Definition
The opposition of the flow of a current.
Term

Current Electricity

 

What is the equation for Current ?

Definition
Resistance x Voltage = Current
Term

Ohm's Law 

 

What is the equation for Ohms?

Definition
Ohms = Volts/Amps
Term

Formula For Resistance

 

What is the Formula ?

 

 

Definition
Resistance = Voltage / Current
Term

Series Circuit

 

If something is disconnected, what happens?

Definition
The whole circuit turns off.
Term

Parallel Circuit 

 

What happens when something is disconnected?

Definition
The whole circuit stays on.
Term

Formula for Current

 

If the Resistance is 4 and the voltage is 6, what is the current? 

Definition
24 Amperes
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