Element synthesis

In this lesson we will explore how scientists have deduced that all of the known elements have been made in the interiors of stars.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 1

Question 1

Question 1

Question 2

Question 2

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Question 3

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Question 3

Question 3

Question 4

Question 4

Question 4

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Question 7

Q1.Which bodies from the list below ALWAYS orbit the Sun in an approximately circular orbit? (choose 2)

Select two (2) boxes

1/6

Q2.Fill in the missing words for the definition of EQUILIBRIUM in context of a star. Equilibrium is when the force of [A] making the star collapse [B] the force due to [C] from the fusion reaction.

2/6

Q3.Which force is responsible for making a gas cloud collapse to form a protostar?

3/6

Q4.Match the stages of the life cycle of a star with a similar mass to that of our Sun.
nebula
white dwarf
main sequence
black dwarf
red giant
protostar

4/6

Q5.Match the stages of the life cycle of a star with a much greater mass compared to that of our Sun.
neutron star
main sequence
red supergiant
supernova
protostar
nebula

5/6

Q6.Arrange the electromagnetic waves in order of wavelength, longest first.
microwaves
gamma
ultraviolet
visible
radio
infra-red
x-ray

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 1

Question 1

Question 1

Question 2

Question 2

Question 3

Question 3

Question 3

Question 3

Question 3

Question 4

Question 4

Question 4

Question 5

Question 5

Question 5

Question 5

Question 6

Question 6

Question 6

Question 7

Question 7

Question 7

Question 7

Q1.Which bodies from the list below ALWAYS orbit the Sun in an approximately circular orbit? (choose 2)

Select two (2) boxes

1/6

Q2.Fill in the missing words for the definition of EQUILIBRIUM in context of a star. Equilibrium is when the force of [A] making the star collapse [B] the force due to [C] from the fusion reaction.

2/6

Q3.Which force is responsible for making a gas cloud collapse to form a protostar?

3/6

Q4.Match the stages of the life cycle of a star with a similar mass to that of our Sun.
nebula
white dwarf
main sequence
black dwarf
red giant
protostar

4/6

Q5.Match the stages of the life cycle of a star with a much greater mass compared to that of our Sun.
neutron star
main sequence
red supergiant
supernova
protostar
nebula

5/6

Q6.Arrange the electromagnetic waves in order of wavelength, longest first.
microwaves
gamma
ultraviolet
visible
radio
infra-red
x-ray

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:

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ 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 ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Element synthesis

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

Question 1

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Q1.Choose the element from the list below that can be synthesised in a main sequence star.

1/9

Q2.Match these fusion reactions to the stages of a massive star's life cycle,
hydrogen to make helium
helium to make elements up to iron
all nuclei to make elements bigger than iron
no fusion at all

2/9

Q3.A nucleus of hydrogen-3 contains...

3/9

Q4.Which phase of a star's life consists of a city-sized body made exclusively of only one type of subatomic particle?

4/9

Q5.Select the bodies that match the description: makes element nuclei larger than helium via fusion (tick 2 boxes)

Select two (2) boxes

5/9

Q6.Select the bodies that match the description: is formed from a star much more massive than the Sun (tick 2 boxes)

Select two (2) boxes

6/9

Q7.Select the body that matches the description: distributes elements across space after exploding

7/9

Q8.Select the body that matches the description: makes only helium via fusion

8/9

Q9.Select the bodies that matches the description: is stable for millions of years (tick 3 boxes)

Select three (3) boxes

9/9

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Element synthesis

This quiz will test your understanding of the topic in the lesson, and prior knowledge from earlier in this topic.

Question 1

Question 2

Question 2

Question 3

Question 3

Question 4

Question 4

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Q1.Choose the element from the list below that can be synthesised in a main sequence star.

1/9

Q2.Match these fusion reactions to the stages of a massive star's life cycle,
hydrogen to make helium
helium to make elements up to iron
all nuclei to make elements bigger than iron
no fusion at all

2/9

Q3.A nucleus of hydrogen-3 contains...

3/9

Q4.Which phase of a star's life consists of a city-sized body made exclusively of only one type of subatomic particle?

4/9

Q5.Select the bodies that match the description: makes element nuclei larger than helium via fusion (tick 2 boxes)

Select two (2) boxes

5/9

Q6.Select the bodies that match the description: is formed from a star much more massive than the Sun (tick 2 boxes)

Select two (2) boxes

6/9

Q7.Select the body that matches the description: distributes elements across space after exploding

7/9

Q8.Select the body that matches the description: makes only helium via fusion

8/9

Q9.Select the bodies that matches the description: is stable for millions of years (tick 3 boxes)

Select three (3) boxes

9/9

Lesson summary: Element synthesis

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