Patterns in The Universe Pre/Post Test 25-26

First Name

Last Name

Science Hour

• 1st Hour
• 2nd Hour
• 3rd Hour
• 4th Hour

You see a drawing of the solar system where all the planets are the same size and spaced equally apart. What is one reason this model is not accurate?

• The model is right because the planets are in the correct order.
• The model is right because the planets are the same size and distance apart.
• The model is not right because planets are different sizes and are not spaced evenly.
• The model should only show the gas planets so the distances are correct.

A student says all moons are much smaller than planets. But Jupiter’s moon Ganymede is 5,268 km wide, and Mercury is only 4,879 km wide. What is the best way to fix the student’s claim?

• All moons are still smaller than big planets.
• Some moons can be bigger than small planets like Mercury.
• Ganymede is not really a moon because it’s too big.
• Mercury should be called a moon instead of a planet.

Why do we see different phases of the Moon from Earth?

• The Moon’s shadow covers Earth.
• The Moon makes its own light.
• The Earth blocks the Sun’s light from the Moon during each phase.
• The Moon moves around Earth, and we see different parts of the lit side.

Why don’t we see a lunar eclipse every month?

• The Moon moves too fast to be blocked.
• The Moon’s path is tilted, so it usually misses Earth’s shadow.
• The Moon doesn’t always reflect sunlight.
• Earth doesn’t always go between the Sun and Moon.

Why is it summer in the Northern Hemisphere?

• Earth is closer to the Sun in summer.
• The Sun gets hotter in the summer.
• Earth is tilted so the Northern Hemisphere gets more direct sunlight.
• Earth spins faster in summer.

What does gravity do in our solar system?

• It pulls planets toward the Sun and keeps them in orbit.
• It makes stars spin fast.
• It doesn’t affect planets.
• It pushes planets away from the Sun.