Exploring the Sun and Stars

Front

What type of land surface absorbs the most insolation and reflects the least?

Back

Dark-colored and rough surfaces absorb the most insolation and reflect the least.

Front

Why does Polaris not appear to move in the nighttime sky?

Back

Polaris is located above Earth’s axis of rotation.

Front

What motion explains why some constellations are visible only during specific seasons?

Back

Earth revolves around the Sun.

Front

What evidence supports the occurrence of nuclear fusion in the Sun?

Back

The Sun emits energy consistent with nuclear fusion reactions.

Front

How can the Milky Way be best described?

Back

The Milky Way is one of billions of galaxies in the universe.

Front

What is insolation?

Back

Insolation is the amount of solar radiation received by a surface.

Front

What is the significance of the Sun's surface temperature in relation to nuclear fusion?

Back

The Sun's surface temperature is high enough to allow nuclear fusion to occur in its core.

Front

What is a galaxy?

Back

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

Front

What is the role of gravity in the formation of stars?

Back

Gravity pulls together gas and dust in space to form stars.

Front

What is the difference between a star and a planet?

Back

A star generates its own light through nuclear fusion, while a planet reflects light from a star.