Shared Flashcard Set

Details

Integrated Science Exam
GPC
39
Science
Undergraduate 2
12/09/2008

Additional Science Flashcards

 


 

Cards

Term
What is made of atoms?
Definition
Matter - which is most everything in our lives (including us)
Term
What forms molecules?
Definition
atoms
Term
What is a chemical reaction?
Definition
when molecules change from one arrangement of atoms to another
Term
What are photons?
Definition
particles of light that are emitted by matter particles
Term
What do photons do?
Definition
They carry energy from one place to another. Atoms and molecules emit and absorb particular energies.
Term
What lab did we do with photons?
Definition
Spectrophotometry lab. We found out how much of a substance was in a mixture by how much light of a particular wave frequency it absorbed.
Term
How do photons move? What lab demonstrated this?
Definition
as though they are riding on waves - The Index of Refraction Lab - saw how the wave nature of light affects photon motion as they go from air to a different fluid
Term
What are the forms of energy?
Definition
Potential, Kinetic, Heat, and Mass
Term
What is potential energy?
Definition
stored energy
Term
Lifting an objects gives it more ______ energy due to gravity.
Definition
potential
Term
Molecules have ____ energy that can be released during a chemical reaction
Definition
stored (potential)
Term
What is Kinetic Energy?
Definition
when an object is moving, its energy is 1/mv^2, where m is the mass of the object and v is the speed
Term
What is Heat Energy?
Definition
Kinetic Energy
Term
What is heat? How does it effect the motion of air and solid molecules?
Definition
Heat is the motion of atoms and molecules. When air gets hotter, the air molecules are moving faster. When a solid object's temperature is raised, it's atoms contain more vibrational energy.
Term
What is Mass? What happens in a chemical reaction when the energy coming out is converted from mass?
Definition
Mass is a form of energy.
When a chemical reaction like the ones we obeserved releases energy, the atoms and molecules become a little lighter because the energy coming out is converted from mass
Term
Since nuclear reaction produce more energy, the mass differences are _____.
Definition
greater
Term
Energy can be converted from type to another, and exchanged from one object to another. True or False?
Definition
True
Term
What are the different forces?
Definition
Gravity, The Electromagnetic Force, and The Strong Nuclear Force
Term
Gravity is
Definition
one of the fundamental forces of nature, it is an attractive force between all things.
Term
Heat Capacity
Definition
how much heat energy is required to raise the temperature of a piece of metal by one degree
Term
What is your weight?
Definition
The Earth's gravitational attractive force on your body
Term
The planets orbit the sun do to _____.
Definition
Gravity
Term
Electromagnetic Force
Definition
holds electrons to atomic nuclei and holds atoms together in molecules
Term
What force drives chemical reactions?
Definition
Electromagnetic Force
Term
What is friction?
Definition
A force that resists motion - turning an objects kinetic energy into heat
Term
Friction is a force that resists motion - since it is the ________ force through which matter interacts on human scales, friction is really atoms interacting through the ________ force.
Definition
The Electromagnetic Force
Term
What does the strong nuclear force do?
Definition
holds nuclei together
Term
Isotope of an Element
Definition
shows that there are many different arrangements of protons and neutrons
Term
Nuclear processes and changes in the atomic nuclei are driven by ?
Definition
strong nuclear force and the electromagnetic force
Term
What is a field?
Definition
All objects that have a mass generate a gravitational field that draws other objects. Earth is a very massive object, so it has a strong field.
Term
What produces electric fields?
Definition
Electric Charges
Term
What does an electron do via its electric field?
Definition
An electron repels another electron via its electric field, but it attracts a proton
Term
What is the Earth's magnetic field produced by?
Definition
An electric current(moving electrons) in Earth's core - this can affect other moving charges, like particles moving past the Earth
Term
What happened in the lab which water was heated by a light bulb?
Definition
energy flowed from the electrons in the light bulb's electricity to the molecules in the water
Term
What happened in the Airtrack lab?
Definition
when the car moved downhill potential energy was converted to kinetic
Term
What happened in the lab were we viewed the spectra of light emitted by gasses?
Definition
photons carried energy between objects
Term
What happened in the telescope lab?
Definition
The telescope collects photons - similar to the way our eyes collect photons when we see something
Term
What happened in the Sound Waves Tube Lab and the Standing Waves lab?
Definition
Energy is carried by other types of waves, like sound waves and waves on a string.
Term
The Electromagnetic force causes the _____ force? What does this force do?
Definition
Magnetic Force and is felt between moving electrons
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