Science Class 4th

101. An example of a simple machine is:

A) Stapler

B) Electric Generator

C) Steam engine

D) Electric Motor

102. _____ is produced by vibrating bodies.

A) Light

B) Heat

C) Sound

D) Degradation


103. Pleasant sound is called:

A) Music

B) Noise


C) Nuisance

D)Resonance

104. Unpleasant sound is called as:

A) Music

B) Noise

C) Nuisance

D) Resonance
 

105. Sound can travel in vacuum.

A) True

B) False

106. _______ turns its outer ear to capture sound waves.

A) Dog

B) Cats

C) Rabbits

D) Horse

107. Sound needs a medium to travel.

A) True

B) False

108. ______ don’t have ears.

A) Kangaroos

B) Hens

C) Snakes

D) Turtles


109. The pleasant effect of sound is called:

A) Music

B) Loud Sound


C) Low Sound

D) Noise

110. Noisy environment is due to:

A) Slow Wind

B) Unpleasant Sound

C) Music


D) Pleasant Sound

111. Sounds cannot travel in

A) Liquids

B) Solids

C) Vacuums

D) Gases

112. The flow of electricity is called:

A) Charge

B) Induction

C) Voltage

D) Current

113. The material through which electricity can pass is called:

A) Inductors

B) Conductors

C) Semi Conductors


D) Electrolyte

114. Gold is an example of:

A) Inductors

B) Conductors

C) Semi Conductors


D) Electrolyte

115. Such material through which current cannot pass is called as:

A) Insulators

B) Conductors

C) Semi Conductors


D) Electrolyte

116. Glass is a type of:

A) Insulators

B) Conductors

C) Semi Conductors


D) Electrolyte

117. The Path in which current flows is called:

A) Pathway

B) Electric Way

C) Circuit

D) None of the above

118. A _____ can break an electrical circuit.

A) Button

B) Key

C) Switch

D) Wire

119. A magnet attracts things made of:

A) Iron

B) Steel


C) Gold

D) Silver

120. There are _____ types of Magnets.

A) One

B) Two

C) Three


D) Four