Exam Questions Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Explain how the process of nuclear fusion leads to the release of energy.
(2)

A

Lighter nuclei join to form heavier nuclei
Some of the mass is converted into energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Explain the advantage of the radioactive waste having a shorter half-life.
(2)

A

Activity decreases at a faster rate so risk of harm decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Describe the process of nuclear fission inside a nuclear reactor. (4)

A

Neutron absorbed by uranium nucleus and splits in two releasing two or three neutrons and gamma rays.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Explain the advantage of power cables running at a high potential difference

A

There’s a very high potential difference means no current therefore causing thermal energy to be transferred surroundings increasing efficiency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Explain why go near a power cable will cause a fatal electric shock

A

The electric field strength is very high causing the air to become ionised therefore the person conducts charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly