# Energy Question Preview (ID: 193)

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The kinetic energy of an object increases as its ____ increases.
a) gravitational energy
b) velocity
c) specific heat
d) potential energy

Increasing the speed of an object ____ its potential energy.
a) does not affect
b) changes
c) decreases
d) increases

The SI unit for energy is the ____.
a) calorie
b) kilogram
c) meter per second
d) joule

You can calculate kinetic energy by using the equation ____.
a) KE (J) = m (kg) x 9.8 m/s 2 x h (m)
b) KE (J) = 9.8 m/s 2 x 1/2 m (kg)
c) KE (J) = 1/2 m (kg) x v 2 (m 2 /s 2 )
d) KE (J) = w (m) x h (m)

Which of the following devices does not make use of electrical energy?
a) upright piano
c) digital camera
d) toaster

A bus engine transfers chemical potential energy into ____ so that the bus moves.
a) thermal energy
b) kinetic energy
c) electrical energy
d) gravitational potential energy

In a nuclear fusion reaction, mass is transformed into ____.
a) matter
b) light
c) energy
d) nuclei

You can calculate gravitational potential energy by using the equation ____.
a) GPE (J) = 1/2m (kg) x 1/2h (m)
b) GPE (J) = 1/2h (m) x w (m)
c) GPE (J) = h (m) x 9.8 m/s 2
d) GPE (J) = m (kg) x 9.8 m/s 2 п‚ґ h (m)

According to the law of conservation of energy, the total amount of energy in the universeВ ____.
a) remains constant
b) decreases
c) increases
d) changes constantly

what occurs when energy is transferred from one object to another
a) an explosion
b) a change
c) nuclear fusion
d) a chemical reaction

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