Changes of State
Types of Energy
Energy Transformation
100
Which change of state is shown?
Melting is shown.
100
Which type of energy is shown?
A. potential energy
B. chemical energy
C. kinetic energy
D. potential energy and kinetic energy
D. potential energy and kinetic energy
100
Describe the energy transformation shown.
Potential mechanical energy transforms into kinetic mechanical energy.
200
Which change of state is shown?
Evaporation is shown.
200
Which type of energy best describes the energy found in this pizza?
Chemical energy
200
Describe the energy transformation shown.
The chemical energy of the wood transforms into electromagnetic energy in the form of light and heat.
300
Dry ice changes directly from a solid state to gas. Which statement about this change of state is not true?
A. Energy increases as it changes from solid to gas.
B. The temperature increases as it changes from solid to gas.
C. This change of state is called sublimation.
D. The mass decreases as it changes from solid to gas.
D. The mass decreases as it changes from solid to gas.
300
Which type of energy best describes the energy given off by wifi?
Electromagnetic Energy
300
Describe the energy transformation shown.
Electrical energy transforms into kinetic energy.
400
Priya put liquid water into the freezer. An hour later she checked it and found it was solid ice. Which statement is true about this change of state?
A. Energy was added to the water particles resulting in freezing.
B. Energy was removed from the water particles resulting in freezing.
C. Mass added to the water particles resulting in melting.
D. Mass was removed from the water particles resulting in freezing.
B. Energy was removed from the water particles resulting in freezing.
400
Which two factors affect the mechanical kinetic energy of an object?
Mass and speed affect the mechanical kinetic energy of an object?
400
Describe the energy transformation shown. (This car is not electric.)
Chemical energy of the gasoline transforms into mechanical kinetic energy.
500
Describe the change in energy, change in temperature, change in the movement of particles, and change in mass that occurs during deposition.
The energy decreases. The temperature decreases. The particles move less freely. The mass stays the same.
500
Classify each of these types of energy as kinetic energy or potential energy.
Chemical energy found in coal
Thermal energy found in a hot object
Sound waves travelling through the air
A stretched rubber band before it is released.
Potential Energy - Chemical energy found in coal and a stretched rubber band before it is released.
Kinetic Energy - Sound waves travelling through the air and thermal energy found in a hot object.
500
Describe the energy transformation shown.
Chemical energy of the battery transforms into sound and electromagnetic energy in the form of light and heat.