Test 1 Review (Astronomy)

Front

What process does the Sun use to produce energy?

Back

Nuclear fusion of hydrogen into helium.

Front

What does an eccentricity close to 0 indicate about a planet's orbit?

Back

The orbit is almost circular.

Front

What does Kepler’s Third Law state about planets and their orbits?

Back

A planet farther from the Sun takes longer to orbit.

Front

Which of the following is the smallest structure in space?

Back

Moon.

Front

How does energy travel outward from the Sun's core?

Back

Through the convective and radiative zones.

Front

What is the main component of the Sun's core?

Back

Hydrogen, which undergoes nuclear fusion.

Front

What is the significance of the photosphere in the Sun?

Back

It is the visible surface of the Sun from which light is emitted.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter.

Front

What is the difference between nuclear fusion and nuclear fission?

Back

Fusion combines light nuclei to form heavier ones, while fission splits heavy nuclei into lighter ones.

Front

What is the solar wind?

Back

A stream of charged particles released from the Sun's atmosphere.