S-E-M UNIT TEST

First name

Last name

How many STARS are in OUR solar system?

• 1
• 8
• Millions

What does this picture best represent?

• Earth's ROTATION
• Earth's ORBIT
• 365 DAYS

The Moon is ___ the size of Earth.

• identical to (THE SAME AS)
• 1/4
• double (TWO TIMES)

How many Earth's can fit between the Earth and the Moon?

• 3
• 4
• 30

A SYNONYM for "orbit" :

• rotation
• tilt
• revolution

Why do we experience day and night?

• The Moon ORBITS Earth
• The Earth ORBITS the Sun
• The Earth SPINS on its axis

When the Sun is at solar noon in Ridgewood during the SUMMER, shadows appear to be....

• the SAME length as dawn.
• the LONGEST they will be during the day.
• the SHORTEST they will be during the day.

We have SEASONS because...

• The EARTH is CLOSER to the SUN during the SUMMER, and FARTHER away from the Sun during the WINTER.
• The Earth's AXIS IS TILTED, causing differences in the amount of daylight and absorbed/released radiation in each hemisphere.
• The Earths ORBIT IS ELLIPTICAL instead of circular, so the Earth is closer to the Sun at various times of the year.