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Energy
Test Description: Practice 2
Instructions: Answer all questions to get your test result.
1) What is the bending of waves due to a change in speed called?
A
interference
B
reflection
C
refraction
D
diffraction
2) The only waves that can travel through space are?
A
chemical waves
B
electromagnetic waves
C
ocean waves
D
mechanical waves
3) From fastest to slowest, what is the order sound waves would travel through a medium
A
gases, liquids, then solids
B
solids, gases, then liquids
C
solids, liquids, then gases
D
liquids, solids, then gases
4) What determines the energy of a mechanical wave?
A
speed
B
amplitude
C
wavelength
D
frequency
5) A match is connected to a circuit by a filament. The circuit lights the match. What energy conversion is taking place?
A
electrical energy to electromagnetic energy
B
electrical energy to mechanical energy
C
electrical energy to thermal energy
D
electrical energy to chemical energy
6) Which process is the burning of a fuel to change chemical energy into thermal energy?
A
electricity
B
combustion
C
heat
D
energy
7) When calcium metal is placed in a container of water, the water molecules break apart the bond to calcium ions. The outside of the container feels very hot to the touch. What is happening during this reaction?
A
Energy leaves the container in the form of heat
B
Energy is destroyed during the chemical reaction
C
Energy is created in the form of heat
D
Energy enters the container from the atmosphere
8) When light energy changes to heat, what happens to the total amount of energy?
A
total amount of energy stays the same
B
total amount of energy increases
C
total amount of energy decreases
D
total amount of energy constantly changes
9) What is the term used to describe why a straw appears to bend when placed in a glass of water?
A
absorption
B
refraction
C
reflection
D
diffraction
10) What would happen if a black object was exposed to direct sunlight?
A
the object would heat up
B
the object would shrink
C
the object would change color
D
the object would reflect the light
11) What are the two main types of mechanical waves?
A
electromagnetic and mechanical
B
sound and light
C
amplitude and frequency
D
longitudinal and transverse
12) What happens when a pebble is dropped in a pond?
A
the water waves spread away
B
the water waves reflect
C
the water waves absorb
D
the water waves compress
13) An object absorbs all the colors of visible light. Which color does the object appear to the observer?
A
brown
B
white
C
black
D
blue
14) Why does a banana appear yellow in white light?
A
the banana reflects only the yellow light
B
the banana absorbs all of the colors of white light
C
the banana reflects all of the colors of white light
D
the banana absorbs only the yellow light
15) What happens when a warm object comes in contact with a cold object?
A
the heat moves from the warm object to the cold object
B
the heat moves from the colder object to the warm object
C
the heat does not move
D
the heat moves randomly
16) A student pours cold water into a cup of hot chocolate. Why does the hot chocolate cool down?
A
The water keeps its coldness and the hot chocolate keeps its heat.
B
The coldness and the heat move back and forth
C
The heat from the hot chocolate moves into the cold water.
D
The coldness from the water moves into the hot chocolate
17) What causes us to see a carrot as being orange?
A
it absorbs orange light by it reflects all other wavelengths
B
it emits orange light
C
it reflects orange light but it absorbs all other wavelengths.
D
it diffracts orange light.
18) What explains why it is possible for you to see undistorted objects through a clear glass window?
A
Light is reflected through the glass
B
Light is absorbed through the glass
C
Light is refracted through the glass
D
Light is transmitted through the glass
19) Why does a battery powered video game heat up when you play it for a long time?
A
magnetic energy is being transferred into heat
B
electrical energy is transferred into heat
C
light energy is being transferred into heat
D
sound energy is being transferred into heat
20) A person puts a pot of water on the stove. When they turn on the burner what kind of energy is electrical transferred into?
A
heat
B
light
C
mechanical
D
magnetic
*select an answer for all questions
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