Energy!

Types of Energy

100

energy of motion

kinetic

200

stored energy

potential

300

energy of an object off the ground due to gravity

gravitational potential

400

kinetic energy + potential energy

mechanical

500

energy in popping noises released from a chemical reaction

sound energy

Types of Energy 2

100

heat energy

thermal

200

energy resulting from movement of charged particles

electrical

300

energy in the sun's rays (not thermal)

radiant

400

energy stored in the bonds between atoms

nuclear

500

energy in food

chemical

Energy Transformations 1

100

When electric current flows through the metal filament of a light bulb, electrical energy is converted to _____

heat and light/radiant energy

200

Water can provide energy that may be changed into electricity. Which kind of water could be used to provide electricity?

a. pure

b. moving

c. deep

d. cold

B - moving

300

A group of students uses a ramp to lift a heavy object instead of lifting it by hand. What is the advantage of using the ramp?

a. mass of object is reduced

b. ramp creates energy

c. ramp requires less force to be used

d. amount of work done is decreased

C - less force required

400

Describe the energy changes that occur as a windmill produces electricity (3 steps)

wind energy -> mechanical energy -> electrical energy

500

Describe the differences in potential and kinetic energy of a ball on a shelf and a ball on the ground. 

Neither has kinetic

ball on shelf has more potential

Energy Transformations 2

100

What energy transformation occurs as a person eats breakfast and then goes for a run?

chemical to kinetic

200

Provide an example of kinetic energy.

(misc)

300

Solar panels are often used to power homes. What kind of energy do they collect?

solar energy from the sun

also ok: thermal, radiant

400

A student rolls a car down a ramp. According to his calculations, the potential energy of the car at the bottom should match the kinetic energy of the car at the top, but it does not match. Explain why.

mechanical energy produces friction, which causes the release of some energy as thermal

500

Describe the potential and kinetic energy of a rollercoaster at the top of a hill, halfway down the hill, and at the bottom of the hill.

misc

Miscellaneous

100

the law of physics that states that energy cannot be created or destroyed, it just changes forms

Law of Conservation of Energy

200

What do the "m" and the "v" stand for in the formula for kinetic energy?

mass, velocity

300

What is the unit for energy?

kg * m/s²

OR

Joules

400

A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?

250 J

500

A 10 kg boulder is stationary at the top of a 20 m hill. What is its gravitational potential energy?

1,960 J