# Weight, mass and gravity

In this lesson we look at the difference between weight and mass, and how to calculate weight using gravitational field strength and mass. We also explore the use of unit conversions, and equation rearranging.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Identify the units of a force

1/7

Q2.True or False? A force is a push or a pull that acts on an object due to the interaction with another object.

2/7

Q3.Which of the following is an example of a non-contact force?

3/7

Q4.A scalar is a quantity that only has what?

4/7

Q5.Which of these quantities is not a scalar?

5/7

Q6.A vector is a quantity that has what?

6/7

Q7.Which of the following is an example of a vector?

7/7

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Identify the units of a force

1/7

Q2.True or False? A force is a push or a pull that acts on an object due to the interaction with another object.

2/7

Q3.Which of the following is an example of a non-contact force?

3/7

Q4.A scalar is a quantity that only has what?

4/7

Q5.Which of these quantities is not a scalar?

5/7

Q6.A vector is a quantity that has what?

6/7

Q7.Which of the following is an example of a vector?

7/7

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the â€˜Resume Videoâ€™ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click â€˜Nextâ€™ below.

Quiz:

# Gravity, Mass, and Weight

This quiz will assess your on the 'Gravity, Mass, and Weight' lesson, and also may include questions from the previous lesson 'Forces - An Introduction'. Make sure you attempt all questions.

Q1.Identify the correct units for weight

1/7

Q2.Identify the correct definition of weight

2/7

Q3.Recall the equation that links gravitational field strength, mass and weight

3/7

Q4.Identify the 3 vectors below

Select three (3) boxes

4/7

Q5.Identify 2 correct statements

Select two (2) boxes

5/7

Q6.When weight acts through a single point of an object, we call this what?

6/7

Q7.Calculate the weight on an object that has a mass of 10 kg, assuming 9.8 N/kg

7/7

Quiz:

# Gravity, Mass, and Weight

This quiz will assess your on the 'Gravity, Mass, and Weight' lesson, and also may include questions from the previous lesson 'Forces - An Introduction'. Make sure you attempt all questions.

Q1.Identify the correct units for weight

1/7

Q2.Identify the correct definition of weight

2/7

Q3.Recall the equation that links gravitational field strength, mass and weight

3/7

Q4.Identify the 3 vectors below

Select three (3) boxes

4/7

Q5.Identify 2 correct statements

Select two (2) boxes

5/7

Q6.When weight acts through a single point of an object, we call this what?

6/7

Q7.Calculate the weight on an object that has a mass of 10 kg, assuming 9.8 N/kg

7/7

# Lesson summary: Weight, mass and gravity

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga