eurekami

Nuclear fission and fusion

11th grade (Year 12 in England) · 16 questions · Common Core: NGSS.HS-PS1-8, NGSS.HS-ESS1-1 · England: GCSE Physics: Atomic structure (nuclear fission and fusion)

Name

Date

Score/ 16

1
Question 1
Fission and fusion: which statement is NOT true?
- A. Today's nuclear power stations use fusion.
- B. A nuclear reactor uses a moderator to slow neutrons down.
- C. Both fission and fusion convert a small amount of mass into energy.
- D. Fusion releases energy in the Sun.
2
Question 2
What starts a chain reaction in uranium-235?
- A. neutrons released by one fission go on to cause more fissions
- B. heat melting the fuel
- C. gamma rays splitting protons
- D. electrons jumping between atoms
3
Question 3
Fission or fusion: needs extremely high temperature and pressure?
- A. fission
- B. fusion
4
Question 4
Fission and fusion: which statement is NOT true?
- A. A nuclear power station can explode like a nuclear bomb.
- B. A nuclear reactor uses a moderator to slow neutrons down.
- C. Fission products are usually radioactive.
- D. Both fission and fusion convert a small amount of mass into energy.
5
Question 5
What starts a chain reaction in uranium-235?
- A. electrons jumping between atoms
- B. heat melting the fuel
- C. gamma rays splitting protons
- D. neutrons released by one fission go on to cause more fissions
6
Question 6
Fission or fusion: powers the Sun and other stars?
- A. fission
- B. fusion
7
Question 7
Fission and fusion: which statement is NOT true?
- A. Fusion releases energy in the Sun.
- B. Fusion splits large nuclei.
- C. Both fission and fusion convert a small amount of mass into energy.
- D. A nuclear reactor uses a moderator to slow neutrons down.
8
Question 8
In 2022 a US laser facility (the National Ignition Facility) reported a fusion milestone. What was it?
- A. fusion was achieved at room temperature
- B. uranium was fused into gold
- C. more fusion energy came out of the fuel than the laser energy delivered to it
- D. a fusion power station started supplying homes
9
Question 9
Fission or fusion: can cause a chain reaction?
- A. fission
- B. fusion
10
Question 10
Fission and fusion: which statement is NOT true?
- A. Fission products are usually radioactive.
- B. Fusion splits large nuclei.
- C. Fusion releases energy in the Sun.
- D. A nuclear reactor uses a moderator to slow neutrons down.
11
Question 11
Why is fusion so hard to achieve on Earth?
- A. Fusion releases no energy
- B. Fusion only works with uranium
- C. There is no hydrogen on Earth
- D. Nuclei repel each other, so extremely high temperatures and pressures are needed
12
Question 12
Fission or fusion: used in today's nuclear power stations?
- A. fission
- B. fusion
13
Question 13
Fission and fusion: which statement is NOT true?
- A. Both fission and fusion convert a small amount of mass into energy.
- B. Fission products are usually radioactive.
- C. Fusion releases energy in the Sun.
- D. Today's nuclear power stations use fusion.
14
Question 14
In 2022 a US laser facility (the National Ignition Facility) reported a fusion milestone. What was it?
- A. more fusion energy came out of the fuel than the laser energy delivered to it
- B. uranium was fused into gold
- C. fusion was achieved at room temperature
- D. a fusion power station started supplying homes
15
Question 15
Fission or fusion: needs extremely high temperature and pressure?
- A. fission
- B. fusion
16
Question 16
Fission and fusion: which statement is NOT true?
- A. A nuclear reactor uses a moderator to slow neutrons down.
- B. Fusion splits large nuclei.
- C. Fission products are usually radioactive.
- D. Both fission and fusion convert a small amount of mass into energy.

Write your answers right on the page. · Free from eurekami.com