Page 141 - Active Science 5 Ebook and Activity

Force and Energy

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Learning Objectives

To Understand
• Force • Effects and types of force

• Energy and its types • Simple machines

To Find Out
• About machines
• Where is fulcrum?

Let’s Begin

The terms force and energy are used by us in our daily life. Let’s do the given activity and
learn how much we are aware about force and energy.

Fill in the blanks by giving the appropriate option.

Ronnie went to watch a live football match. The
stadium was well lit. It was producing ___________
(light/sound) energy. While playing football, the

player hit the ball with ________ (force/motion)
and it went up, came back to the earth because
of __________ (frictional/gravitational) force. On
the other hand, the referee whistled to control

the game, he used _________ (sound/heat) energy.

You know that when you push or pull an object (i.e. apply a force), then either the object
moves from rest or it stops moving. The applied force changes the direction of movement
or changes the shape of an object or changes the speed. Therefore, a push or pull applied
to move an object is called force. For example, a boy while doing boxing practice, a man

pushing a cart, etc. Now, we will learn the effects of force.

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