Unit Test — Unit test

Question 1

Which statements describe the use of gamma rays to treat cancer? Check all that apply.Gamma rays have low energy and a source must be placed in the body.Gamma rays are absorbed by only the cancer cells.High-energy gamma rays are directed at a tumor from outside of the body.Gamma rays kill cancer cells in a tumor.Gamma rays are applied to a large area of the body.

Revolt · Accepted Answer

High-energy gamma rays are directed at a tumor from outside of the body.; Gamma rays kill cancer cells in a tumor.

Question 2

Mimi makes a table about the two types of beta decay.What error did Mimi make?

Revolt · Accepted Answer

No change in mass number occurs in beta minus decay.

Question 3

What hazard is associated with ionizing radiation?

Revolt · Accepted Answer

It creates charged particles that can take part in chemical reactions in cells.

Question 4

Seven-eighths of a sample of hydrogen-3 will have become a stable isotope after 36.9 years. What is the half-life of hydrogen-3?

Revolt · Accepted Answer

12.3 years

Question 5

Which best describes fusion nuclear reactors?

Revolt · Accepted Answer

They have been successful, but they are very expensive to operate.

Question 6

Roberto makes a graphic organizer to compare fusion nuclear reactions and fission nuclear reactions.

Revolt · Accepted Answer

X: A larger nucleus formsY: Large amounts of energy are releasedZ: Smaller nuclei form

Question 7

Which statement describes why energy is released in a nuclear fission reaction based on mass-energy equivalence?

Revolt · Accepted Answer

For large nuclei, the mass of the original nucleus is greater than the mass of the products.

Question 8

mass-energy equivalencemass defectbinding energymass-energy conservation

Revolt · Accepted Answer

binding energy

Unit Test — Unit test Answers

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