Chapter 1 Flashcard Brightness of the Sun Compared to Other Stars

Front

What makes objects appear larger when viewed?

Back

Objects that are closer to you appear larger.

Front

What is the nearest star to Earth?

Back

The Sun is the nearest star to planet Earth.

Front

True or False: The planets, moons, stars, and Earth are all part of the universe.

Back

True

Front

What happens to the appearance of objects that are farther away?

Back

Objects farther away from you appear smaller.

Front

What do Light Years measure?

Back

Light Years are a measure of distance.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity, like the Sun.

Front

What is the universe?

Back

The universe is all of space and time, including all planets, stars, galaxies, and the contents of intergalactic space.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light and heat through nuclear fusion.

Front

What is the role of gravity in the universe?

Back

Gravity is the force that attracts objects with mass towards each other, keeping planets in orbit around stars.

Front

What is a light year?

Back

A light year is the distance that light travels in one year, approximately 5.88 trillion miles.