AnswersPhysicsThe Sun's Energy

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1
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Which processes transfer energy from the core to the photosphere?

A
conduction, then friction
B
convection, then conduction
C
radiation, then friction
D
radiation, then convection
2
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What is the third step of the hydrogen fusion process?

A
2 cubed He plus 2 cubed He rightarrow 2 to the 4th power He plus 2 times open paren 1 to the 1th power cap h close paren plus energy
B
6 times open paren 1 to the 1th power cap h close paren plus 2 times open paren negative 1 to the 0 power e close paren rightarrow 2 to the 4th power He plus 2 times open paren 1 to the 1th power cap h close paren plus energy plus 2 v
C
1 to the 1th power cap h plus 1 to the 1th power cap h rightarrow 1 squared cap h plus e raised to the plus plus v power plus energy
D
1 squared cap h plus 1 to the 1th power cap h rightarrow 2 cubed He plus energy
3

Electromagnetic energy released during fusion is converted to other kinds of photons as it is transferred through which layer of the Sun?

A
photosphere
B
core
C
radiative zone
D
convective zone
4

Which description best models the energy transfer that occurs in the radiative zone?

A
A suitcase on a conveyor belt is moved from a plane to the baggage claim area.
B
A baton is handed from one runner to the next, around a track.
C
A ball is thrown by a player to a fan in the stands.
D
A dropped wallet is kicked around the floor of a busy train station.
5

What are the layers of the Sun, starting from the surface and moving inward?

A
core, radiative zone, convective zone, photosphere
B
photosphere, convective zone, radiative zone, core
C
photosphere, radiative zone, convective zone, core
D
core, photosphere, convective zone, radiative zone
6

What occurs as energy is transferred through the convective zone of the Sun? Choose three correct answers.

A
Gamma rays are converted into different types of photons.
B
Photons are scattered in many directions.
C
Energy is transferred through the large-scale movement of material.
D
Photons are absorbed by hot gas atoms.
E
Energy is released into the photosphere.
7

What is the net change that occurs during the fusion process in the Sun?

A
Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.
B
Two hydrogen nuclei come together to produce a helium nucleus and energy.
C
Two helium nuclei come together to form a larger helium nucleus, two protons, and energy.
D
Six hydrogen nuclei and two electrons join to form a helium nucleus, two protons, two neutrinos, and energy.
8

The diagram shows the three steps of the fusion process in the Sun. Expand Image Expand Image Expand Image In what order do the steps occur?

A
X, Y, Z
B
Y, X, Z
C
Z, Y, X
D
Z, X, Y
9

Sahil is making a graphic novel in which the villain plans to reduce the rate at which energy is released from the Sun. The villain’s device can make a hollow sphere of material have a uniform density. How should Sahil’s villain use the device?

A
on the radiative zone, where energy is transferred through the movement of the gas
B
on the convective zone, where energy is transferred by being repeatedly absorbed and emitted
C
on the radiative zone, where energy is transferred by being repeatedly absorbed and emitted
D
on the convective zone, where energy is transferred through the movement of the gas
10

What are the products of step 1 of the hydrogen fusion process in the Sun? Choose four correct answers.

A
a positron
B
a neutrino
C
helium
D
an electron
E
hydrogen
F
energy

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