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Energy
Test Description: Integrated science 9th
Instructions: Answer all questions to get your test result.
1) The kinetic energy of an object increases as its ____ increases.
A
specific heat
B
gravitational energy
C
velocity
D
potential energy
2) Increasing the speed of an object ____ its potential energy.
A
increases
B
decreases
C
changes
D
does not affect
3) The SI unit for energy is the ____.
A
joule
B
meter per second
C
kilogram
D
calorie
4) You can calculate kinetic energy by using the equation ____.
A
KE (J) = 1/2 m (kg) x v 2 (m 2 /s 2 )
B
KE (J) = w (m) x h (m)
C
KE (J) = 9.8 m/s 2 x 1/2 m (kg)
D
KE (J) = m (kg) x 9.8 m/s 2 x h (m)
5) Which of the following devices does not make use of electrical energy?
A
upright piano
B
toaster
C
digital camera
D
radio
6) A bus engine transfers chemical potential energy into ____ so that the bus moves.
A
electrical energy
B
kinetic energy
C
gravitational potential energy
D
thermal energy
7) In a nuclear fusion reaction, mass is transformed into ____.
A
nuclei
B
light
C
energy
D
matter
8) You can calculate gravitational potential energy by using the equation ____.
A
GPE (J) = h (m) x 9.8 m/s 2
B
GPE (J) = 1/2m (kg) x 1/2h (m)
C
GPE (J) = 1/2h (m) x w (m)
D
GPE (J) = m (kg) x 9.8 m/s 2 п‚ґ h (m)
9) According to the law of conservation of energy, the total amount of energy in the universeВ ____.
A
remains constant
B
changes constantly
C
increases
D
decreases
10) what occurs when energy is transferred from one object to another
A
nuclear fusion
B
a chemical reaction
C
a change
D
an explosion
*select an answer for all questions
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