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Energy Test #2 Review
Test Description: Review for the second energy test.
Instructions: Answer all questions to get your test result.
1) A gasoline powered car drives up a hill. What energy transformation occurs in the car's engine?
A
mechanical energy into nuclear energy
B
electrical energy into chemical energy
C
thermal energy into chemical energy
D
chemical energy to mechanical energy
2) If used at the same rate, what energy source would run out first?
A
biomass
B
wind
C
solar
D
fossil fuels
3) What transformation of energy happens inside a battery when it is used?
A
thermal to chemical
B
mechanical to thermal
C
chemical to electrical and thermal
D
electrical to mechanical and thermal
4) When sunlight shines on a radiometer, the blades inside begin to spin. What energy transformation is this?
A
mechanical to electrostatic
B
elastic to mechanical
C
electrical to magnetic
D
electromagnetic to mechanical
5) A person places a can of soda into a container of ice. Describe the thermal energy transfers.
A
Both soda and ice decrease thermal energy
B
Both soda and ice increase in thermal energy
C
The soda will increase its thermal energy, the ice will decrease its thermal energy
D
The soda will decrease its thermal energy, the ice will increase its thermal energy
6) Which renewable energy resources would most likely be used in a hot, windy, dry area like a desert?
A
wind and hydroelectric
B
hydroelectric and coal
C
geothermal and solar
D
wind and solar
7) When warm fluid rises and cold fluid sinks, what type of thermal energy transfer is this?
A
convection
B
radiation
C
evaporation
D
conduction
8) A hand-cranked flashlight has no batteries and works by moving gears inside generating current to run the light. What conversions of energy happen here?
A
mechanical to electrical to electromagnetic
B
mechanical to chemical to electromagnetic
C
chemical to mechanical to electromagnetic
D
chemical to electrical to electromagnetic
9) A pot of water is put on an electric stove and starts to boil. What is the correct order of thermal energy transfers?
A
convection then radiation
B
conduction then radiation
C
conduction then convection
D
convection then conduction
10) A beaker of water on a hot plate is heated to boiling and then turned off. What will eventually happen to the water temperature?
A
It will decrease until it reaches room temperature
B
It will increase until it reaches room temperature
C
It will remain at boiling temperature
D
It will increase above the boiling point
11) A pinwheel spins when it is held over a burning candle. What energy transformation is this?
A
thermal to sound
B
thermal to mechanical
C
sound to thermal
D
mechanical to electromagnetic
12) Which statement is an example of energy conservation by reducing consumption?
A
Make an art project out of recycled paper, plastic containers, aluminum, and glass
B
Create a compost pile of discarded fruit and vegetable materials
C
Walk instead of driving a car so not as much oil will need to be pumped from the ground
D
Use a margarine tub to hold coins in a desk drawer
13) People sitting near a campfire can feel the heat from the fire. How are they able to feel the heat off to the side without touching the fire?
A
The heat from the fire moves to the people by radiation
B
The heat from the fire rises and then settles around the people by convection
C
The heat from the fire moves through air molecules by conduction
D
The heat from the fire moves through the ground by conduction
14) When food is put in a refrigerator, the heat from the food is transferred to the air inside the refrigerator. The process continues until the temperature of the food is the same as the air. This is an example of...
A
thermal equilibrium
B
specific heat
C
chemical potential energy
D
solar radiation
15) What energy transformation occurs when using a hair dryer?
A
electrical to sound to chemical
B
thermal to electrical to sound
C
electrical to mechanical to thermal
D
electromagnetic to mechanical to nuclear
16) Convection transfers heat through fluids. Two materials that transfer heat by convection are...
A
water and metal
B
metal and fire
C
air and sand
D
water and air
17) A student pours lemonade from a pitcher into a glass. Which statement best describes the change in the liquid's energy as it falls into the glass?
A
The liquid's potential and kinetic energy combine to form gravitational kinetic.
B
The liquid gains both potential and kinetic energy.
C
The liquid loses kinetic energy as it gains potential energy.
D
The liquid's potential energy is changed into kinetic energy.
*select an answer for all questions
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