GRADE 4 - Effects of Force on Objects

Question 1

What is a “Force”?

Answer 1

A vector quantity that can be described as a push or pull on an object resulting from the object’s interaction with another object.

Question 2

What is a vector quantity?

Answer 2

Any quantity that has magnitude and direction. or
Which causes acceleration

Question 3

Force only exist as?

Answer 3

As a result of an interaction

Question 4

Force is measured in units called?

Answer 4

Newton (N) - from Isaac Newton

Question 5

What are the effects of force?

Answer 5

• Start things to move
• Stop things to move
• Change speed
• Change direction
• Change shape

Question 6

What is a magnet?

Answer 6

An object that attracts certain material such as iron.

Question 7

Regions where the magnet is strongest?

Answer 7

North and South poles 9 (because it always line up with the Earth’s axis when allowed to move freely)

Question 8

What is the force that a magnet exerts on certain material?

Answer 8

Magnetic Force

Question 9

What allows the magnet to Exert force over a distance?

Answer 9

Magnet is surrounded by a MAGNETIC FIELD

Question 10

Effect of Force is also called

Answer 10

Resultant Forces

Question 11

if resultant force is zero

Answer 11

Forces on the object are balanced

Question 12

If the resultant force acting on the object is ‘zero’

Answer 12

Then the object will remain stationary. In such case the object will move at steady speed in a straight line.

Question 13

If the resultant force acting on the object isn’t zero

Answer 13

Then the object will either accelerate or decelerate.