Basics of Physics Worksheet-9

Basics of Physics Worksheet-9

1. What is a fuse that is used in electrical circuits?

(a) A device that generate electric voltage.

(b) A device that generate heat.

(c) A device that prevents excess flow of electric current.

(d) A device that provides excess flow of electric current.

1. What is electricity?

(a) Movement of atoms

(b) A form of energy

(c) Attraction force between opposite poles

(d) None of the above

1. What is the scientific name of the distance labeled "A" in the above picture?

(a) Frequency                                 (b) Wavelength

(c) Volume                                      (d) Pitch

1. Thermal expansion occurs because particles of matter _______ as temperature increases.

(a) move further apart                (b) come closer

(c) align together in a line          (d) rotate in circles

1. Materials that completely block the light wave are called ______. Material that allow all the light to pass through are called _____.

(a) heavy, light                             (b) opaque, transparent

(c) transparent, opaque              (d) opaque, translucent

1. Sound wave travels _____ in solids than in liquids.

(a) Slower

(b) Faster

(c) Almost same

(d) Sound wave does not travel through solids

1. What is the atomic structure of magnets?

(a) Its atoms are spread in random direction and acts as a tiny individual magnet.

(b) Its atoms are lined up in same direction and acts as a tiny individual magnet.

(c) Its atoms are spread in random direction and acts as a tiny gravity puller.

(d) Its atoms are spread in random direction and provide electricity.

1. Which energy comes from the Sun?

(a) Heat              (b) Chemical     (c) Potential      (d) Ocean

1. Which of the following equations represents the Newton's second law of motion?

(a) Force = Mass × Acceleration

(b) Mass = Force × Acceleration

(c) Acceleration = Mass / Force

(d) Force = Mass × velocity

1. An object in motion has _____ energy and a stretched spring has _____ energy.

(a) kinetic, potential                     (b) potential, kinetic

(c) kinetic, thermal                       (d) electrical, potential