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Worksheets8th Physical Science GMAS Review Energy/Heat Transfer
Total questions: 30
Worksheet time: 16mins
Name
Class
Date
1.
Which of the following forms of energy is released or absorbed in MOST chemical reactions?
a)
light energy
b)
electrical energy
c)
sound energy
d)
heat energy
2.
A car uses gasoline for fuel. Which of the following describes the energy conversion from gasoline to the movement of the car?
a)
mechanical to electrical
b)
heat to light
c)
electrical to nuclear
d)
chemical to mechanical
3.
Which of the following uses mechanical energy to function?
a)
computer
b)
battery
c)
microwave oven
d)
windmill
4.
Which of the following is an example of mechanical energy being converted to light energy?
a)
ringing a doorbell
b)
striking a match
c)
turning on a computer monitor
d)
water falling over a dam
5.
An engine converts 95% of energy input into useful work output. What happens to the remaining 5% of the energy?
a)
It is converted to heat or to some other form of unuseable energy
b)
It is destroyed in the process of converting from one type of energy to another.
c)
It is stored in the engine for later use.
d)
It is lost along with the mass of the fuel.
6.
Which of the following is an example of potential energy?
a)
a rock rolling down a hill
b)
a rock resting at the bottom of a hill
c)
a rock at the top of a hill
d)
a rock bouncing down a hill
7.
All forms of energy are a combination of
a)
mechanical energy and chemical energy
b)
chemical energy and kinetic energy
c)
potential energy and thermal energy
d)
potential energy and kinetic energy
8.
Which of the following is an example of kinetic energy?
a)
a baseball flying through the air
b)
a baseball in a catcher's mitt
c)
a baseball in a locker
d)
a baseball stuck in a house gutter
9.
When energy is transformed from one form to another, some of the energy is lost in the form of
a)
mechanical energy.
b)
hydrogen gas.
c)
water.
d)
thermal energy.
10.
Which of the following is a source of potential energy that could release radiant energy?
a)
a diamond
b)
salt water
c)
a neutron
d)
a match
11.
A pot of soup is boiling on the hot eye of a stove. Three distinct modes of heat transfer are occurring. Which process circulates energy inside the heating pan of soup?
a)
radiation
b)
convection
c)
circulation
d)
conduction
12.
A wet cell battery is an example of stored potential energy. Once connected to a load, the stored energy is converted. Describe the conversion of energy that results in the movement of the hands in a battery-operated clock
a)
chemical to electrical to mechanical
b)
chemical to thermal to electrical
c)
electrical to thermal to mechanical
d)
chemical to electrical to thermal
13.
Which of the following is able to convert all the thermal energy produced into useful work?
a)
nuclear power reactor
b)
gasoline engine
c)
stovetop range
d)
none of the above
14.
Which of the following is a conversion from chemical energy to mechanical energy?
a)
a dark light bulb starting to glow
b)
food being heated in an oven
c)
a ball rolling down a hill
d)
a person lifting a weight
15.
Energy is always transferred through heat from
a)
an object with a lower specific heat to one with a higher specific heat.
b)
a cooler object to a warmer object.
c)
an object with a higher specific heat to one with a lower specific heat.
d)
a warmer object to a cooler object
16.
Energy from the sun travels to Earth through which process?
a)
temperature
b)
conduction
c)
radiation
d)
convection
17.
How is energy transferred by convection?
a)
by direct contact between objects
b)
by movement of groups of particles in gases or liquids
c)
by electromagnetic waves
d)
by movement of groups of particles in solid objects
18.
In which situation has heat energy moved mainly by conduction through matter?
a)
A radiator heated with hot water warms a room.
b)
The person sitting closest to the blazing fire finds it necessaryto move farther from the heat.
c)
The handle of a cast iron skillet being used to cook something becomes too hot to touch.
d)
The red-hot coil of an electric space heater is used to keep a small room warm.
19.
What kind of energy transformation occurs when you turn on a vacuum cleaner?
a)
mechanical to electrical
b)
electrical to mechanical
c)
chemical to mechanical
d)
thermal to electrical
20.
In the simple act of lighting a match, chemical energy stored in the match head is transformed into heat and light. What is true about this energy transformation?
a)
Most of the energy is lost when the match is struck.
b)
New energy in the form of light and heat is created when the match is struck.
c)
All of the potential chemical energy is transformed into heat and light energy.
d)
Some of the chemical energy is transformed into heat and light and the rest is converted into matter.
21.
Which of these correctly describes the transfer of heat between the Sun and water in a lake?
a)
Conduction from the Sun heats the water at the surface, and heat spreads throughout the water by radiation.
b)
Radiation from the Sun heats up the water at the surface, and heat spreads throughout the water by radiation.
c)
Radiation from the Sun heats up the water at the surface, and heat spreads throughout the water by convection.
d)
Convection from the Sun heats up the water at the surface, and heat spreads throughout the water by conduction.
22.
What change occurs when an object's potential energy is transformed into kinetic energy?
a)
The speed of the object increases.
b)
The speed of the object decreases.
c)
The mass of the object increases.
d)
The mass of the object decreases.
23.
Which of the following describes the energy transformation that occurs during each activity?
a)
Carson plays a bongo drum:
sound to mechanical energy
sound to mechanical energy
b)
Mattie drops a ball:
kinetic to potential energy
kinetic to potential energy
c)
a glowing light bulb:
electrical to light energy
electrical to light energy
d)
a burning candle:
light to mechanical energy
light to mechanical energy
24.
Blake stood in front of a fireplace to get warm after playing in the snow. How was heat from the fireplace transferred to Blake?
a)
conduction
b)
convection
c)
refraction
d)
radiation
25.
Britney used a battery-powered lantern on a camping trip. Which of the following identifies the energy conversions that occurred when she turned on the lantern?
a)
chemical energy→electrical energy→light energy
b)
electrical energy→chemical energy→light energy
c)
electrical energy→light energy→chemical energy
d)
chemical energy→light energy→electrical energy
26.
Predict the energy transformation that occurs when Carson sands a piece of wood with sand paper.
a)
chemical energy to heat energy
b)
heat energy to mechanical energy
c)
mechanical energy to heat energy
d)
mechanical energy to chemical energy
27.
What energy transfer occurs when the turbine turns in an electric generator?
a)
electrical to mechanical
b)
chemical to electrical
c)
mechanical to electrical
d)
chemical to mechanical
28.
In making a pizza, which process involves a chemical change?
a)
mixing spices for the sauce
b)
slicing pepperoni for the topping
c)
grating cheese and spreading it on top of the pizza
d)
baking the dough to form the crust
29.
Which of the following is an example of heat transfer by convection?
a)
A hot wood stove heats an entire room.
b)
The handle of a pot that is being heated becomes warm.
c)
The coils of a toaster become red.
d)
A teaspoon in a cup of hot tea becomes warm.
30.
Gas stations warn customers not to overfill their gas tanks because the tank could overflow as the day gets warmer. Which of the following BEST explains why the gasoline would overflow?
a)
Heat causes air to leave the tank.
b)
Heat causes air to flow into the tank.
c)
Heat causes liquid to expand.
d)
Heat causes liquid to contract.
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