True/False:
Heat causes a change in the temperature of an object.
True
100
Which change of state takes place when a gas loses energy?
condensation
100
Which form of energy is stored in food?
chemical
100
True/False:
Biomass is an alternative energy resource
True
100
Which of the following materials, if wrapped around an object, would best prevent the loss of energy as heat from that object?
A. copper
B. gold
C. iron
D. plastic
D
200
What is the boiling point of water in degrees Celsius
100
200
A cold block of metal is placed in contact with a warm block of metal. Which type of energy will be transferred between the blocks?
A. thermal energy
B. chemical energy
C. electrical energy
D. mechanical energy
A
200
What type of energy is stored in batteries ?
chemical
200
Through which process do fossil fuels form?
A. Wind and water gradually break rock into pieces.
B. Volcanic lava cools and hardens after an eruption.
C. Heat and pressure act on layers of sediment over time.
D. Acids in rainwater slowly convert rock to other substances.
c
200
True/False: Nuclear energy produces more air pollution than fossil fuels.
False
300
How many calories are needed to raise the temperature of 1 gram of water by 1 degrees Celsius?
1 cal
300
Inside a room, the air is often warmer near the ceiling than near the floor. What accounts for this difference in temperature?
convection
300
As a ball rolls down a hill, potential energy is converted into....
Kinetic energy
300
Which energy resource supplies most of the energy needs for the United States?
A. biomass
B. fossil fuels
C. solar energy
D. wind energy
B
300
Which of these choices best describes the thermal energy of a substance?
A. the sum of the kinetic energy of all of the particles of a substance
B. the average kinetic energy of the particles that make up a substance
C. the total kinetic and potential energies of the particles of a substance
D. the difference between the kinetic energy and potential energy of a substance
A
400
Sarah heated two cubes of aluminum to 50°C. Cube A has a volume of four cubic centimeters. Cube B has a volume of two cubic centimeters. Which cube has more thermal energy?
Cube A
400
Which two units of measurement are commonly used to measure heat?
calorie and joule
400
What form of energy is an x-ray?
electromagnetic
400
How is a renewable energy resource different from a nonrenewable energy resource?
Renewable resources can be replaced at the same rate at which they are used.
400
What is any energy resource that can be used in place of fossil fuels called?
alternative energy
500
How can two objects have the same temperature but different thermal energies?
One object has more particles
500
What is the difference between a conductor and an insulator?
A conductor transmits energy very well while an insulator does not.
500
Which form of energy is due to the motion of an object's particles?
thermal energy
500
Which type of energy involves harnessing heat produced within Earth to generate electricity?
geothermal energy
500
Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy?