# Internal energy

In this lesson we will look at internal energy and the two stores of energy that it depends on. We will look in greater detail at the effect of heating a substance and how the energy stores change.

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.What piece of equipment do you use to measure an object's mass?

1/6

Q2.What piece of equipment do you use to measure a liquid's volume?

2/6

Q3.A 500 ml sports drink has a mass of 600 g. Work out it's density.

3/6

Q4.Given that the density of water is 1 g/cm^3, work out the amount of solid dissolved in the above sports drink?

4/6

Q5.The resolution of a measuring cylinder is?

5/6

Q6.A student takes 3 readings of object's mass, they are 0.51 kg, 0.55 kg and 0.59 kg. Work out the uncertainty in these readings.

6/6

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.What piece of equipment do you use to measure an object's mass?

1/6

Q2.What piece of equipment do you use to measure a liquid's volume?

2/6

Q3.A 500 ml sports drink has a mass of 600 g. Work out it's density.

3/6

Q4.Given that the density of water is 1 g/cm^3, work out the amount of solid dissolved in the above sports drink?

4/6

Q5.The resolution of a measuring cylinder is?

5/6

Q6.A student takes 3 readings of object's mass, they are 0.51 kg, 0.55 kg and 0.59 kg. Work out the uncertainty in these readings.

6/6

# 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:

# Internal energy

This is assessing your understanding of the topics covered in the internal energy lesson.

Q1.Revision - the equation for calculating density is?

1/8

Q2.Revision - density is defined as the mass per unit _________ ?

2/8

Q3.Revision - which state of matter has the highest density?

3/8

Q4.Internal energy is the sum of which two stores of energy?

Select two (2) boxes

4/8

Q5.Which object would contain the most thermal energy?

5/8

Q6.Name the two changes of state that occur when heating a solid substance.

Select two (2) boxes

6/8

Q7.Which store of energy increases when the temperature of a substance increases?

7/8

Q8.Which store of energy increases when a substance changes state?

8/8

Quiz:

# Internal energy

This is assessing your understanding of the topics covered in the internal energy lesson.

Q1.Revision - the equation for calculating density is?

1/8

Q2.Revision - density is defined as the mass per unit _________ ?

2/8

Q3.Revision - which state of matter has the highest density?

3/8

Q4.Internal energy is the sum of which two stores of energy?

Select two (2) boxes

4/8

Q5.Which object would contain the most thermal energy?

5/8

Q6.Name the two changes of state that occur when heating a solid substance.

Select two (2) boxes

6/8

Q7.Which store of energy increases when the temperature of a substance increases?

7/8

Q8.Which store of energy increases when a substance changes state?

8/8

# Lesson summary: Internal energy

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga