space

Which of the following planets most likely has the highest temperature?

• Earth
• Mars
• Mercury
• Neptune

Which of the following explains the revolution of a planet?

• The Earth revolves around the sun once per day.
• The Earth revolves around the sun once per year.
• The moon revolves around the sun once per day.
• The Earth rotates on it's axis once per day.

What celestial body is at the center of our solar system?

• Earth
• Moon
• Milky Way
• Sun

What is the milky way?

• One of many galaxies in the universe.
• A constellation.
• The only galaxy in the universe.
• A planet in our galaxy.

What is the correct order from largest to smallest?

• galaxy, universe, planet, sun
• planet, sun, galaxy, universe
• universe, galaxy, sun, planet
• sun, galaxy, universe, planet

What are two differences between planets?

• Outer planets take longer to revolve and are larger.
• Outer planets take longer to revolve and are smaller.
• Inner planets take longer to revolve and are smaller.
• Inner planets take longer to revolve and are larger.

What is an example of one Earth day?

• The Earth moves away from the sun.
• The Earth rotates once on its axis.
• The Earth revolves once on its axis.
• The Earth moves closer to the sun.

How long does it take from one full moon to the next full moon?

• About one day.
• About one year
• About one season
• About one month.

Small diameter and a shorter orbit around the sun are characteristics of which of the following?

• inner planets
• outer planets
• stars
• asteroids

Stars are made mostly of which of the following?

• very hot metal
• hot gases of hydrogen and helium
• hot molten lava
• dust and ice