Matter
Forces
Energy
Conservation of Energy
Energy Conversions
100

What state of matter fills up a balloon when a child blows it up?

Gas

100

What is a force?

A push or pull

100

What kind of energy is produced by the vibration of molecules or atoms?

Thermal energy (or Kinetic energy)

100

Which law states that energy cannot be created or destroyed, but energy can be converted from one form to another form?

The law of conservation of energy

100

What energy transformation occurs in a computer?

Electrical energy into light energy

200

Which law states that matter cannot be created or destroyed, but matter can change forms?

The law of conservation of matter

200

How does the force of gravity change for an astronaut as her distance from Earth doubles?

The force of gravity decreases by a factor of 4

200

What is the kind of energy that is being transferred to rocks in a stream that causes the rocks to move?

Kinetic energy

200

What is the kinetic energy of an asteroid with mass 413 kg falling to Earth at a velocity of 54 m/s.

602,000 J

200

What energy transformation occurs in a space heater?

Electrical energy into heat energy

300

What are the four types of matter?

Solid, liquid, gas, and plasma

300

How does the force of gravity compare between you (60 kg) and your friend (120 kg)?

Your friend experiences a force of gravity twice as much

300

What is the type of energy that is greatest in a rock resting at the top of a cliff?

Gravitational potential energy

300

What is the gravitational potential energy of a television on Earth with mass 7.5 kg at a height of 0.4 m?

29.4 J

300

What energy transformation occurs in a flashlight?

Chemical energy into light energy

400

Is heat absorbed or released when a solid becomes a liquid?

Heat is absorbed

400

What type of electricity occurs when a balloon becomes charged by rubbing it on hair?

Static electricity

400

What is the type of energy associated with moving electrons?

Electrical energy

500

Is heat absorbed or released as a gas becomes a liquid?

Heat is released

500

What direction does the electric field point at a position directly west of a positive charge?

West

500

What type of energy is stored when you stretch a rubber band?

Elastic potential energy