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