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