# Basics of Physics Worksheet-4

Basics of Physics Worksheet-4

1. Which of the following is an example of stored energy?

A. Cell battery                              B. Stretched rubber band

C. Inflated balloon                       D. All of the above

1. What is a circuit breaker?

A. A device that close a switch and creates a close circuit when very low current flows

B. A device that opens a switch and creates an open circuit when very high current flows through it.

C. A device that close a switch and creates a close circuit when electric bulbs are burning bright.

D. A device that opens a switch and creates an open circuit when the circuit is close.

1. A positive charge will ______ another positive charge.

A. destroy          B. move              C. attract           D. repel

1. How does running water change the Earth's surface?

A. By cleaning the rivers

B. By flooding a lake

C. By washing away and depositing rock and soil from one place to other.

D. By washing away and depositing rock trees and plants from one place to other.

1. How does heat affect the size of matter?

A. Only organic types of matter expand when heated.

B. Most types of matter shrink when heated.

C. Most types of matter expand when heated.

D. None of the above

1. What color will be absorbed by a red transparent film?

A. Only red                                   B. Only Infrared

C. All colors but red                     D. None

1. What kind of pulley is shown in the picture?

A. Simple Pulley                           B. Complex Pulley

C. Fixed Pulley                             D. Movable Pulley

1. What is the device shown in the picture?

A. Natural magnet                       B. Electromagnet

C. Motor                                        D. Generator

1. A train moves 300 kilometers in two hours. What is the speed of the train?

A. 300 kilometer/hour               B. 200 kilometer/hour

C. 150 kilometer/hour                D. 100 kilometer/hour

1. In which of the following matter does the sound travel fastest?

A. Liquid            B. Solid              C. Gas                 D. Vacuum