Answers2001310 Earth Science Sem 1 - ReevesApplications of Electromagnetic Induction

Lesson 7.4 Fission and Fusion Answers

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103456

Which statement accurately describes mass-energy equivalence?

A
It includes the idea that mass is a measure of the energy within an object.
B
It states that mass-energy can be created or destroyed.
C
It can be represented using the formula E = m2c.
D
It states that all energy in the universe will be converted to mass.
103457

What is the energy equivalent of an object with a mass of 1.83 kg?

A
1.65 × 1017 J
B
2.92 × 1017 J
C
3.10 × 1017 J
D
5.49 × 1017 J
103459

Why is nuclear energy able to be used for practical purposes?

A
The reactions are controlled to regulate energy output.
B
The reactions are uncontrolled for maximum energy output.
C
All of the products are fed back into the reaction to keep it going.
D
All of the products are immediately removed to inhibit more reactions.
103460

Explain why nuclear fission and nuclear fusion release large amounts of energy.

Answer:

In nuclear fission, the mass of the original nucleus is greater than the mass of the products. The extra mass is converted to energy. In nuclear fusion, the total binding energy of the lighter nuclei is greater than the binding energy of the heavier nucleus. Extra energy is released during the reaction.

103461

What did you include in your response? Check all that apply.

A
In nuclear fission, the mass of the original nucleus is greater than the mass of the products.
B
In nuclear fission, the extra mass is converted into energy.
C
In nuclear fusion, the total binding energy of the lighter nuclei is greater than the binding energy of the heavier nucleus.
D
Extra energy from nuclear fusion is released.

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