Astronomy / Cosmology

Earth's ________ on its axis causes day and night.

• rotation
• revolution
• phase
• comet

One full orbit of an object around another object is called a ________.

• axis

• rotation

• revolution

• satellite

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

Where is the asteroid belt found?

• between earth and mars
• Between Uranus and Neptune
• Between Mercury and Venus
• Between Mars and Jupiter

Day and night is caused by the _____________ of earth on its axis.

• revolution
• orbit
• rotation

Which best explains why the moon has phases?

• The moon’s position changes in relation to the sun and Earth. 
• The sun’s position changes in relation to the moon and Earth. 
• The Earth casts a shadow on the moon as it rotates. 
• The moon rotates along its axis

As the Earth travels around the sun, this tilt causes different areas of the Earth’s surface to get different amounts of daylight at different times of the year. The angle of the Sun’s rays to the surface also causes areas to have more or less of the Sun’s energy. This causes the ________.

• months
• day and night
• seasons
• years

a pattern of stars that form an imaginary picture or design in the sky

• Orbit
• Rotate
• constellation
• Milky Way

Which color star has medium temperature?

• Bluish-White
• Yellow
• Reddish-Orange

A ball of ice and dust with a tail of gas and dust pointing away from the sun.

• Asteroid
• Comet
• Moon
• Meteor