The smart way to improve grades

Comprehensive & curriculum aligned

Affordable pricing from £10/month

Mass, Weight and Gravity

In this worksheet, students learn about the definition of mass and how it differs from weight. Further, the effect of the gravitational force of Earth is investigated.

'Mass, Weight and Gravity' worksheet

Key stage:  KS 4

Curriculum topic:  Physics: Forces and Motion

Curriculum subtopic:  Weight and Gravitational Field Strength

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

Mass is the amount of matter in an object. Weight is a force acting on that matter. Weight is the result of gravity that attracts objects towards the centre of the Earth.

The strength of the weight as a force depends on the strength of the gravitational field around the Earth and other planets. The formula that shows the relation between mass, weight and gravitational field strength is:

 

weight  =  mass  ×  gravitational field strength

 

Weight is measured in Newton (N), mass in kg and the gravitational field strength on Earth is 10 N/kg. On the Moon it is only 1.6 N/kg.

Gravity is very important, because it keeps the Earth's atmosphere in place, it secures the orbit of the planets around the Sun and keeps galaxies together. Tide is a result of gravitational pull between the Earth and the Moon, as you can see on this diagram.

 

 

Black holes have an extremely high gravitational pull, so nothing can escape them.

 

 

The worksheet 'Gravity and Satellites' includes more information on natural and man-made satellites and their uses. 

Choose the right definition of mass.

the strength of gravity in an object

the amount of matter in an object

how heavy an object is

What is weight?

Write one word.

Why is there such a force as weight?

because of Earth's magnetic field

because of mass

because of gravity

Calculate the weight of a 1 kg book on Earth.

1 N

10 N

100 N

Calculate the weight of the same 1 kg book on the Moon.

1.6 N

1.6 kg

1.6 N/kg

Calculate the mass of an object if its weight on Earth is 100 N.

1000 kg

100 kg

10 kg

What is the gravitational field of planet X if a 100 kg object weighs 5000 N there?

500 000 N/kg

500 N/kg

50 N/kg

Name a phenomenon that occurs due to gravity on Earth.

Write one word.

Name a phenomenon that occurs in space due to gravity.

Write two words.

How is gravity vital to life on Earth?

We can not escape Earth.

The atmosphere stays in its place.

Gravity keeps galaxies together.

  • Question 1

Choose the right definition of mass.

CORRECT ANSWER
the amount of matter in an object
EDDIE SAYS
Mass is the amount of matter in an object.
  • Question 2

What is weight?

Write one word.

CORRECT ANSWER
force
forces
EDDIE SAYS
Weight is a force.
  • Question 3

Why is there such a force as weight?

CORRECT ANSWER
because of gravity
EDDIE SAYS
Weight is the result of gravity.
  • Question 4

Calculate the weight of a 1 kg book on Earth.

CORRECT ANSWER
10 N
EDDIE SAYS
weight = mass x Earth's gravitational field strength
= 1 x 10 = 10 N
  • Question 5

Calculate the weight of the same 1 kg book on the Moon.

CORRECT ANSWER
1.6 N
EDDIE SAYS
weight = mass x Moon's gravitational field strength
= 1 x 1.6 = 1.6 N
  • Question 6

Calculate the mass of an object if its weight on Earth is 100 N.

CORRECT ANSWER
10 kg
EDDIE SAYS
weight = mass x Earth's gravitational field strength (g)
mass = weight / g = 100 / 10 =10 kg
  • Question 7

What is the gravitational field of planet X if a 100 kg object weighs 5000 N there?

CORRECT ANSWER
50 N/kg
EDDIE SAYS
weight = mass x gravitational field strength (g)
g = weight / mass = 5000 / 100 = 50 N/kg
  • Question 8

Name a phenomenon that occurs due to gravity on Earth.

Write one word.

CORRECT ANSWER
tide
tides
EDDIE SAYS
Tides are the result of the gravitational pull between Earth and Moon.
  • Question 9

Name a phenomenon that occurs in space due to gravity.

Write two words.

CORRECT ANSWER
black hole
black holes
EDDIE SAYS
Black holes have extreme gravitational pull; therefore, nothing can escape them.
  • Question 10

How is gravity vital to life on Earth?

CORRECT ANSWER
The atmosphere stays in its place.
EDDIE SAYS
Gravity is vital to life on Earth, because it keeps the atmosphere in its place.
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Start your £1 trial

Start your trial for £1