Solar System Unit test

A lot can be learned about the planets by studying them from Earth with telescopes and special instruments. which could be learned about Venus only by sending a space probe (spaceship) to that planet?

• the shape of Venus's orbit
• the size of Venus
• The distance between the Sun and Venus
• the kind of material under Venus's surface.

The objects in the night sky seem to slowly move across the sky because Earth

• has lunar eclipses
• revolves around the sun
• is tilted on its axis
• rotates on its axis

Why does the Moon shine brightly at night?

• It is like the sun
• It reflects light from the Sun
• Light from the stars makes it look like it is shining
• Lights from Earth make it shine

 Which explains why day and night occur on different parts of Earth?

• Earth rotates on its axis.
• Earth revolves around the Sun.
• The Sun rotates on its axis.
• The Sun revolves around the galaxy.

Seasons are caused by

•  the position of the Moon.
•  the tilt of Earth as it moves around the Sun.
• the distance of Earth from the Sun.
• the Sun getting warmer and colder

When stars are different colors, we can conclude that they have different

• sizes
• layers
• gases
• temperature

Suppose there is a full moon tonight.  Which phase of the moon will you see in about 15days?

• first quarter
• third quarter
• new moon
• full moon

How do the inner and outer planets differ?

• The inner planets are dense and rocky, while the outer planets are made mostly of gases.
• The outer planets have fewer moons than the inner planets do.
• The inner planets are farther away from the sun.
• The outer planets are smaller than the inner planets.

Which detail best explains why summers at the North Pole are cold?

• Winters are long at the poles.
• The North Pole is covered with ice
• Earth’s revolution around the sun slows during the summer.
• The sun’s rays are indirect at the North Pole.

Which statement is accurate? 

• All stars have rocky cores.
•   You can see all nine planets in our solar system with a telescope.
• The planets seem to wander through the constellations.
• All stars are the same size and color.