The Sun Answers

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3

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.
4

How are Van Allen belts formed?

A
High-energy particles from the Sun get trapped in Earth’s magnetic field.
B
Metals in Earth’s core sink and rise, producing a circular movement of the metals.
C
Particles in solar wind travel along lines of Earth’s magnetic field and collide with gas atoms.
D
Material from the surface of the Sun erupts and forms a loop due to the Sun’s magnetic field.
6

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.
7

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
8

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

A
the corona
B
the photosphere
C
the core
D
the chromosphere
10

What are the dark areas on the surface of the Sun?

A
solar flares
B
sunspots
C
prominences
D
solar winds

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The Sun Answers — 2001310 Earth Science Sem 1 …