Assesment
Read each question.And select the best answer
1.What form of energy is produced when the strings of a guitar are plucked?
A. Mechanical C.Radiant
B. Electrical D.Sound
2.What energy transformation takes place in a blender or mixer?
A.Mechanical energy to elctrical energy
B.Electrical energy to Mechanical energy
C.Mechanical energy to chemical energy
D.Thermal energy to mechanical energy
3.What happens to heat during energy transformation?
A.Heat absorbed by the envirolment
B.Heat escapes into outer space
C.Heat is reabsorbed by the heated object
D.Heat is changed to radiant energy
4.Which best illustrates the law of energy conservation?
A.Clapping hands - heat
B.Ringing of a church bell - sound
C.Swinging of a pedulum - kinetic energy
D.All of the above
5.When one uses an exhaust fan,what kind of energy transfer happens?
A.Radiation C.Convection
B.Conduction D.Nuclear
6.When does a form of energy become useful?
A.When it is stored as chemical energy
B.When it is released into the atmosphere
C.When it is transformed into another form
D.When it is conserved
7.Which is the main source of energy on earth?
A.Sun B.Water C.Plants D.Animals
8.Which of the following electrical devices transforms elctrical energy into sound energy?
A.Stereo C.Flashlight
B.Oven D.Refregerator
9.What is always produced during energy transformation?
A.Light B.Heat C.Sound D.Electricity
10.Which of the following shows that energy is being transformed?
A.A swinging pendulum
B.A candle resting on a table top
C.A ream of paper inside a box
D.A glass inside a cabinet
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Answer:
1. D
2.B
3.D
4.D
5.C
6.A
7.A
8.A
9.B
10.A
Explanation:
Sana makatulong.
Correct me if im wrong.
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