Unit 2: Energy Review Part 1

What cannot happen to energy according to the law of conservation of energy?

• Energy can be created or destroyed.
• Energy can be destroyed.
• Energy cannot be created or destroyed
• Energy can created or destroyed but not transformed

What kind of energy is in a moving skateboard?

• Both potential and kinetic energy
• Kinetic Energy
• Electromagnetic Energy
• Light Energy

What kind of heat transfer is occurring when the sun warms the sand?

• Density
• Conduction
• Radiation
• Convection

Radiation is the only way of transferring thermal energy that doesn't require matter.

• True
• False

Which statement best defines Mechanical Energy?

• Energy that travels in waves due to vibrations.
• Energy that is produced by an electrical current in a circuit.
• Energy from the sun.
• Energy produced by a machine or moving part.

What energy do you produce riding your bike? __________

• Mechanical Energy
• Light Energy
• Sound Energy
• Thermal Energy

If the person rides the bike to the top of a hill, the kinetic energy of motion is then converted into potential energy stored in the bike at the top of the hill. The potential energy stored in the bike at the top of the hill can be used to roll the bike down the hill.

• True
• False

What is happening in this picture ?

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Two objects with different temperature in thermal contact will reach thermal equilibrium when.....

• both object reach the same final temperature
• both object becomes hotter
• net heat transfer other than zero
• both objects become colder

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

• conduction
• convection
• radiation
• Insolation