Galactic Guidebook Unit Review

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity. The Sun is an example of a star.

Front

What do stars in a constellation have in common?

Back

They are in a similar direction from Earth.

Front

Do shadows stay the same length and direction throughout the day?

Back

FALSE. Shadows change length and direction as the Sun moves across the sky.

Front

What is a light year?

Back

A light year is a measure of distance that light travels in one year.

Front

Which month has the longest daylight hours in the northern hemisphere?

Back

July.

Front

What is the main difference between a planet and a star?

Back

A planet does not produce its own light; it reflects light from a star.

Front

What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when close to the Sun, displays a visible atmosphere or coma and sometimes a tail.

Front

What is the Milky Way?

Back

The Milky Way is the galaxy that contains our solar system, consisting of billions of stars, planets, and other celestial objects.

Front

What causes day and night?

Back

Day and night are caused by the rotation of the Earth on its axis.

Front

What is the difference between a solar eclipse and a lunar eclipse?

Back

A solar eclipse occurs when the Moon passes between the Earth and the Sun, blocking the Sun's light. A lunar eclipse occurs when the Earth passes between the Sun and the Moon, casting a shadow on the Moon.