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!

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.What is the correct sequence of stages in the life cycle of a star with a similar mass to that of our Sun.

4/6

Q5.What is the correct sequence of stages in the life cycle of a star with a much greater mass compared to that of our Sun.

5/6

Q6.What is the order of the electromagnetic waves in order of wavelength, longest first.

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!

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.What is the correct sequence of stages in the life cycle of a star with a similar mass to that of our Sun.

4/6

Q5.What is the correct sequence of stages in the life cycle of a star with a much greater mass compared to that of our Sun.

5/6

Q6.What is the order of the electromagnetic waves in order of wavelength, longest first.

6/6

Video

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Worksheet

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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.

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

1/12

Q2.During which stage of a massive star's life cycle does hydrogen fuse to make helium?

2/12

Q3.During which stage of a massive star's life cycle does helium fuse to make elements up to iron?

3/12

Q4.During which stage of a massive star's life cycle does no fusion occur?

4/12

Q5.During which stage of a massive star's life cycle do all nuclei fuse to make elements bigger than iron?

5/12

Q6.A nucleus of hydrogen-3 contains...

6/12

Q7.Which phase of a star's life consists of a city-sized body made exclusively of only one type of subatomic particle?

7/12

Q8.Select the bodies that match the description: makes element nuclei larger than helium via fusion (tick 2 boxes)

Select two (2) boxes

8/12

Q9.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

9/12

Q10.Select the body that match the description: distributes elements across space after exploding

10/12

Q11.Select the body that match the description: makes only helium via fusion

11/12

Q12.Select the bodies that match the description: is stable for millions of years (tick 3 boxes)

Select three (3) boxes

12/12

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.

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

1/12

Q2.During which stage of a massive star's life cycle does hydrogen fuse to make helium?

2/12

Q3.During which stage of a massive star's life cycle does helium fuse to make elements up to iron?

3/12

Q4.During which stage of a massive star's life cycle does no fusion occur?

4/12

Q5.During which stage of a massive star's life cycle do all nuclei fuse to make elements bigger than iron?

5/12

Q6.A nucleus of hydrogen-3 contains...

6/12

Q7.Which phase of a star's life consists of a city-sized body made exclusively of only one type of subatomic particle?

7/12

Q8.Select the bodies that match the description: makes element nuclei larger than helium via fusion (tick 2 boxes)

Select two (2) boxes

8/12

Q9.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

9/12

Q10.Select the body that match the description: distributes elements across space after exploding

10/12

Q11.Select the body that match the description: makes only helium via fusion

11/12

Q12.Select the bodies that match the description: is stable for millions of years (tick 3 boxes)

Select three (3) boxes

12/12

Lesson summary: Element synthesis

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