AnswersDISD CR Physics 2020-2021Universal Law of Gravitation

The Sun Answers

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The distance between planets varies as they move in their orbits. The minimum distance from the Earth to Mars is about 0.35 AU. About how many kilometers is that?

A
15,000,000 km
B
25,000,000 km
C
55,000,000 km
D
70,000,000 km
2
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Scientists around the world have been working for decades on perfecting the process of nuclear fusion in the lab. Which statement justifies this research?

A
Scientists are looking for a way to generate an unlimited source of hydrogen.
B
Scientists are looking for a way to absorb the energy produced by nuclear bombs.
C
Scientists are looking for a way to produce the uncommon noble gas helium.
D
Scientists are looking for a way to create cheap, safe, and sustainable energy.
3

Where in the Sun does the production of energy take place?

A
the corona
B
the photosphere
C
the core
D
the chromosphere
4

In order to recreate the process of energy production that takes place in the Sun, scientists use

A
hydrogen gas and add heat and pressure.
B
helium gas and remove heat and pressure.
C
hydrogen gas, add heat, and remove pressure.
D
helium gas, remove heat, and add pressure.
5

Carrie is making a presentation on solar winds. Her notes of the steps that must occur for solar winds to form are below.1. The stream of electrically charged particles collide with gas atoms, causing the latter to give off light.2. The electrically charged particles flow outward in all directions as far as Saturn.3. The stream of electrically charged particles flows outward from the corona.4. The particles of the solar wind flow along lines of the magnetic field.Which shows the correct sequence in the formation of solar winds?

A
1, 2, 3, 4
B
2, 3, 4, 1
C
3, 2, 4, 1
D
4, 2, 1, 3
6

A magnetic field protects Earth from the Sun’s high-energy particles. What two processes are involved in the formation of Earth’s magnetic field?

A
the movement of materials in Earth’s mantle and Earth’s rotation
B
the movement of metals in Earth’s core and Earth’s rotation
C
the movement of solar wind toward Earth and Earth’s revolution
D
the movement of eruptions from the Sun’s surface and Earth’s revolution
7

Scientists in a lab are working on a series of experiments that involve colliding two or more atomic nuclei at very high speeds to form a new type of atomic nucleus. What are they working on?

A
convection
B
radiation
C
nuclear fusion
D
nuclear fission
8

Dr. Tate and Dr. Ramirez are observing the effects of a type of solar activity that has reached the planet Jupiter. What solar activity are they observing?

A
solar flares
B
sunspots
C
prominences
D
solar winds
9

What is an astronomical unit?

A
the average distance between planets in the solar system
B
the average distance between the Earth and the moon
C
the approximate diameter of the Sun including its atmosphere
D
the average distance between the Earth and the Sun
10

What is the temperature of the middle most layer of the Sun's atmosphere?

A
It’s temperature is 5,500 degrees celsius to 6,000 degrees celsius.
B
It’s temperature is 6,000 degrees celsius to 20,000 degrees celsius.
C
It’s temperature is 20,000 degrees celsius to 2,000,000 degrees celsius.
D
It’s temperature is 2,000,000 degrees celsius to 3,000,000 degrees celsius.

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