Answers TX-Integrated Physics and Chemistry B-CRUnit Test

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Doug is doing work. Without knowing exactly what he is doing, which can be said about the work he is doing?

Energy is transferred.

Energy is increased.

Energy is decreased.

Energy is unchanged.

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Ryan is examining the energy of the particles in a bar of gold. What is Ryan most likely studying?

thermal energy

electric energy

potential energy

internal energy

What is the overall energy transformation in a coal-fired power plant?

electrical to chemical

chemical to electrical

nuclear to radiant

radiant to nuclear

Consider the three equations below.Which statement do these reactions best support?

Beta decay occurs only in certain atoms.

Alpha decay occurs only in certain atoms.

Chain reactions play important roles in the process of nuclear fission.

Nuclear fusion plays an important role in making elements that are heavier than helium.

Which best describes what forms in nuclear fission?

two smaller, more stable nuclei

two larger, less stable nuclei

one smaller, less stable nucleus

one larger, more stable nucleus

Which best defines energy?

a type of wave that carries energy through space, where there is almost no matter

a disturbance that carries energy form one place to another through matter and space

the ability to do work

pressing to make more compact

Two examples of energy transformations are shown.

begin with chemical energy.

begin with electrical energy.

result in radiant energy.

result in mechanical energy.

Hedea made a study chart about nuclear energy.Which best describes the error in Hedea’s chart?

The nuclei of atoms are split apart in both fission and fusion.

The nuclei of atoms are joined together in both fission and fusion.

Fission converts nuclear energy to electrical energy, not thermal energy.

Fission and fusion convert nuclear energy to both radiant and thermal energy.

Which best describes nuclear fusion?

A nucleus spontaneously splits and absorbs energy.

Two nuclei spontaneously combine and absorb energy.

A nucleus collides with a neutron and splits, releasing energy.

Nuclei combine to form a heavier nucleus, releasing energy.

Which best describes a difference between energy transformations in power plants and dams?

Only power plants use fossil fuels to transform energy.

Only dams use fission to generate thermal energy.

Only power plants use water to turn turbines.

Only dams use mechanical energy to produce electricity.

Which type of radiation do people try to protect themselves from by wearing protective clothing that is made of aluminum?

alpha radiation

beta radiation

gamma radiation

photon radiation

Which type of reaction does this diagram represent?

a chain reaction that is caused by nuclear fission

a chain reaction that is caused by nuclear fusion

a decrease in energy that is caused by nuclear fission

an increase in energy that is caused by nuclear fusion

This table shows four examples of experiments.

Lily and Henry

Astrid and Bob

Lily, Astrid, Henry, and Bob

Astrid, Henry, and Bob

Which is an example of potential energy?

a swimmer kicking their legs

a car driving on the road

an arrow flying at a target

a yo-yo in someone’s hand

Why would a doctor most likely restrict a patient’s contact with other people while the patient receives internal radiation?

The patient’s stress and anxiety would be eliminated.

High levels of radiation can diffuse through the patient’s skin.

Social contact would increase the effect of the radiation treatment.

Radioactive material can leave the patient’s body through saliva, sweat, and urine.

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