Energy Test

No description yet. This curated deck is ready for daily study.

Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

What is energy?

Back (Answer)

Ability to do work

Front (Question)

What is the work-energy theorem?

Back (Answer)

Work done is energy added

Front (Question)

What is kinetic energy and what two things does it depend on?

Back (Answer)

Energy of motion, mass, and velocity

Front (Question)

How much kinetic energy does a truck with a mass of 2,000 kg moving at 30 m/s have?

Back (Answer)

Ke = ½mv² = ½(2,000)(30)² = 900,000 J

Front (Question)

What is potential energy? What two things does gravitational potential energy depend on?

Back (Answer)

Stored energy, mass, and height

Front (Question)

How much potential energy does a bowling ball with a mass of 10 kg have when it is elevated 20m up?

Back (Answer)

Pe = mgh = (10)(9.8)(20) = 1960 J

Front (Question)

Define thermal energy.

Back (Answer)

Vibrations of particles given off as heat

Front (Question)

Define chemical energy.

Back (Answer)

Energy stored in chemical bonds

Front (Question)

Define mechanical energy.

Back (Answer)

Potential + Kinetic associated with motion

#10

Front (Question)

Define electrical energy.

Back (Answer)

Produced by moving charges

#11

Front (Question)

Define electromagnetic energy.

Back (Answer)

Travels through space in waves

#12

Front (Question)

Define temperature.

Back (Answer)

Average kinetic energy of particles

#13

Front (Question)

Define nuclear energy.

Back (Answer)

Energy stored in atomic nuclei

#14

Front (Question)

Give three examples of energy conversions from your everyday life.

Back (Answer)

• Potential to kinetic - use food for energy • Potential to kinetic - pole vault • Electrical to light - turn on light switch

#15

Front (Question)

What does the law of conservation of energy state?

Back (Answer)

Energy can’t be created or destroyed, only change form

#16

Front (Question)

What is friction?

Back (Answer)

Force that resists motion between sliding objects

#17

Front (Question)

What is the gravitational potential energy of a 20 kg child on a swing traveling at 3.0 m/s with 250 J of total mechanical energy?

Back (Answer)

140 J PE = mgh = 140 = (20)(10)h

#18

Front (Question)

How high is the 20 kg child above the ground?

Back (Answer)

7 m 140 = (20)(10)h

#19

Front (Question)

What is the kinetic energy of a 20 kg child traveling at 3.0 m/s?

Back (Answer)

90 J KE = ½ mv² = ½(20)(3)²

#20

Front (Question)

What is the total mechanical energy of a 5.0 kg book dropped from the top of a football stadium when its speed is 10.0 m/s at 2.0 meters above the ground?

Back (Answer)

350 J Total mechanical energy = PE + KE

#21

Front (Question)

What is the potential energy of a 5.0 kg book at 2.0 meters above the ground?

Back (Answer)

100 J PE = mgh = (5)(10)(2)

#22

Front (Question)

What is the kinetic energy of a 5.0 kg book traveling at 10.0 m/s?

Back (Answer)

250 J KE = ½ mv² = ½(5)(10)²

#23

Front (Question)

What was the total mechanical energy of the book at the instant it was released?

Back (Answer)

350 J

#24

Front (Question)

What did Einstein theorize about the relationship between energy and mass?

Back (Answer)

E = mc² Energy and mass are equal