Forces Test

Question 1

Force is measured in what?

Answer 1

Newtons (N)

Question 2

An advantage of friction?

Answer 2

Shoes gripping the road - you’re not slipping

Question 3

Disadvantage of friction?

Answer 3

New shoes rubbing against feet - gives a blister

Question 4

4 main contact forces?

Answer 4

Push, pull, twist, tear

Question 5

Name a piece of scientific equipment (apparatus) which helps determine the mass (in g) and the force (in N).

Answer 5

Spring balance

Question 6

What is a type of lubricant that reduces friction?

Answer 6

Oil

Question 7

Name types of balanced forces.

Answer 7

Laying down, standing up, sitting.

Question 8

Name types of unbalanced forces.

Answer 8

Skipping, walking, jumping, running, writing.

Question 9

Balanced forces are a situation in which there is change or no change?

Answer 9

No change

Question 10

What is the net force of a balanced force?

Answer 10

0N.

Question 11

An unbalanced force is a situation which there is change or no change?

Answer 11

Change

Question 12

Is there net force in an unbalanced force?

Answer 12

Yes, there is always an overall net force.

Question 13

What is net force?

Answer 13

Net force is the force acting on an object. Net force is calculated when one or more forces are being applied to an object.

Question 14

What is a non contact force?

Answer 14

Non contact forces are forces that act on an object without any physical interaction.

Question 15

Name 3 types of non contact forces.

Answer 15

Gravitational force, magnetic force, electrostatic force.

Question 16

Name metals that can become magnets.

Answer 16

Iron, cobalt, nickel.

Question 17

Name the two types of magnets.

Answer 17

Permanent and temporary magnets.

Question 18

What is the black rod which is charged up with wool? Does it become positive or negative?

Answer 18

Ebonite, it is charged up with wool to become a negative charge.

Question 19

What is the clear rod that is charged up with silk? Does it become a positive or negative charge?

Answer 19

Perspex, it is charged up with silk to become a positive charge.

Question 20

What is an electromagnet?

Answer 20

An electromagnet is a metal object which is turned into a magnetic force by coils wrapped around it which produce electricity, forming an electric current.

Question 21

Is a substance that loses electrons positively or negatively charged?

Answer 21

Positively charged.

Question 22

Is a substance that gains electrons positively or negatively charged?

Answer 22

Negatively charged.

Question 23

How can you strengthen an electromagnet?

Answer 23

Increase the voltage or the amount of coils.

Question 24

What is mass? What is it measured in?

Answer 24

Mass is the amount of matter in an object. It is usually measured in grams, kilograms, etc.

Question 25

What is weight? What is it measured in?

Answer 25

Weight is the measurement of force exerted by the gravity on an object. It is measured in Newtons.