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Details

ILS 2nd semester final review
ILS
37
Science
9th Grade
05/29/2013

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Cards

Term
When do two objects repel each other? When do they attract?
Definition
They will repel when there are two charges of the same. They will attract when they are two different charges.
Term
3 ways a object can become statically charged.
Definition
Friction, induction, and conduction.
Term
What type of material is a good conductor? What is a good insulator?
Definition

Copper.

Plastic.

Term
What does a object with a equal number of protons and electrons have?
Definition
a positive charge.
Term
What are the parts of a circuit?
Definition
Battery, Switch, Light bulb, Resistor, and Wires.
Term
Differences between series and parallel circuit?
Definition

parallel circuit can have more than one switch.

With a parallel circuit if you detach one wire on light will stay on.

Term
What happens to the appliences if one burns out?
Definition
In a circuit series everything will go off but in a series circuit, the other part will stay on.
Term
What are the names of the terminals on a battery?
Definition
Cathode and Anode.
Term
Current is the rate at which charges move though a?
Definition
Conductor
Term

Whether or not charges will move in a material depends partly on how tightly _____ are held in the atoms of?

Definition
Electrons
Term
What is Ohm's law?
Definition
It is a law stating that electric current is proportional to voltage and inversely proportional to resistance.
Term
Who is Wegener? and why is he important to plate tectonics?
Definition
Wegener was a german polar scientist. And he created the theory of continental drift.
Term
What is Pangaea?
Definition
Pangaea was a supercontinent that consisted of all of the continents in the world.
Term
What was the theory of continental drift? Evidence?
Definition
It is the theory that once all the continents were joined in a super-continent but the seperated. There were some fossils found in places that gave evidence.
Term
What are the layers of the earth?
Definition
Inner core, Outer core, Mantle, and Crust.
Term
Where is the continental crust the thickest and thinnest?
Definition

Thickest= mountain root

Thinnest=rift zones

Term
Differences between continental and oceanic?
Definition
continental is thicker but oceanic is denser.
Term
Radioactive materials have unstable _____?
Definition
Nuclei
Term
Compare  and contrast convergent , divergent and transform fault boundaries?
Definition
At a convergent plate boundary, two tectonic plates are moving toward each other; at a divergent plate boundary, two tectonic platesare moving away from each other.
Term
What happens at the San Andreas Fault?
Definition
The plates slide against eachother.
Term
What are convection currents?
Definition
Convections currents are movements caused by temp. changes in liquid or gas bodies.
Term
Where do most earthquakes and volcanoes occur?
Definition
Along cracks and boundaries of tectonic plates.
Term

What does a seismogram measure?

Definition
Earthquakes.
Term
How many seismograms do you need to read the epicenter?
Definition
3
Term
What are P, S, and Surface waves?
Definition
P- waves are the initial waves, S-waves are the secondary waves and Surface are the ones that do the damage
Term
What was a richter scale made to do?
Definition
It was made to measure small earthquakes.
Term
What is static?
Definition
A stationary electric charge, typically produced by friction that causes sparks or crackling.
Term
What is the asthenosphere?
Definition
The asthenosphere is the upper layer of the earth's mantle, below the lithosphere.
Term
What is focus?
Definition
Adapt to the prevailing level of light and become able to see clearly.
Term
What is humidity?
Definition
A quantity representing the amount of water vapor present in the air.
Term
What is electrical power?
Definition
The product of voltage and current.
Term
What is fossil fuels?
Definition
A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
Term
What is a isotope?
Definition
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei.
Term
What is kinetic energy?
Definition
Energy that a body possesses by virtue of being in motion.
Term
What are electrons?
Definition
A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity
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