1. WHAT IS THE DIFFERENCE BETWEEN ROTATION AND REVOLUTION?

Rotation is the spin of a body on its axis, while

revolution is one complete trip around an orbit.

2. HOW LONG DOES IT TAKE FOR THE EARTH TO REVOLVE? ROTATE?

The Earth takes 365.25 days to revolve around

the sun, and 24 hours to rotate around its axis.

3. WHY DOES THE EARTH HAVE SEASONS?

The Earth has seasons because its axis is tilted

23.5⁰.

4. WHEN THE NORTHERN HEMISPHERE IS TILTED TOWARD THE SUN, WHAT SEASON IS IT? WHEN IT IS TILTED AWAY FROM THE SUN IT IS WHAT SEASON?

When the Northern Hemisphere is tilted

toward the sun, it is summer. When it is

tilted away from the sun, it is winter.

5. WHAT IS THE DIFFERENCE BETWEEN THE WINTER AND SUMMER SOLSTICE?

During the winter solstice, the Earth’s axis is tilted away from the sun the furthest. It is the shortest daylight for the Northern Hemisphere.

During the summer solstice, the Earth’s axis is tilted toward the sun the furthest. It is the longest daylight for the Northern Hemisphere.

6. WHAT IS AN EQUINOX?

Equinox is when the sun’s rays are

perpendicular to the axis of the Earth, and

fall directly on the equator. Day and night

are approximately the same length.

Neither pole is tilted towards the sun

THINK EQUAL

7. WHY DO WE NEVER SEE THE FAR SIDE OF THE MOON?

We never see the far side of the moon because

the moon’s period of rotation is about the

same as its period of revolution.

We don’t see the dark side of the moon!

8. PHASES OF THE MOON DEPEND ON?

…depends on how much of the sunlit side of the moon faces Earth, or where the moon

is on its orbit around the Earth.

9. DRAW THE PHASES OF THE MOON IN ORDER FROM NEW MOON TO NEW MOON.

10. WHAT IS THE DIFFERENCE BETWEEN A SOLAR AND LUNAR ECLIPSE? WHAT MOON PHASE DO THEY OCCUR DURING?

A solar eclipse happens during a new moon. During a solar eclipse, the shadow of the moon falls on Earth and the moon covers the sun.

A lunar eclipse happens during a full moon. During a lunar eclipse, the shadow of the Earth falls on the moon so it cannot reflect the sunlight. The moon seems to turn a reddish color.

11. HOW OFTEN TO TIDES OCCUR AND HOW MANY HOURS ARE BETWEEN EACH?

• We have two low tides and two high tides in

a 24 hour period.

• 12 hours between high tide and high tide or

between low tide and low tide.

• 6 hours between high tide and low tide or

between low tide and high tide.

12. WHAT IS THE MOST WIDELY ACCEPTED THEORY OF THE FORMATION OF THE MOON AND EXPLAIN THE THEORY?

The most widely accepted theory of the

formation of the moon is the Collision Theory

that explains that a large, Mars-size object

collided with Earth while the Earth was still

forming. The collision was so violent that a part

of the Earth’s mantle was blasted into orbit

around Earth to form the moon.

Collision Theory (start clip at 1:50)

13. WHERE HAVE SCIENTIST GOTTEN MOST OF THEIR INFORMATION ABOUT THE MOON FROM?

… the study of the moon rocks gathered by

astronauts.

14. HOW LONG DOES IT TAKE THE MOON TO ROTATE? REVOLVE?

Rotation and revolution are EQUAL!!!! 23.5 Days

15. WHAT IS THE DIFFERENCE BETWEEN A SPRING AND NEAP TIDE? WHAT MOON PHASES DO THEY OCCUR DURING?

Neap tide happens whe the sun, the Earth and

the moon are at a 90⁰ angle. There is not much

of a difference between a high and a low tide.

They happen during first and last quarters.

Spring tide happens when the Earth the sun

and the moon are aligned and the Earth

experiences extreme tides. They happen during

the new moon and the full moon.

Neap: Small little

Spring: Large

16. IN WHICH LOCATION WOULD YOU SEE A TOTAL ECLIPSE? PARTIAL ECLIPSE?

You would see a

total eclipse in the

umbra.

You would see a

partial eclipse in

the penumbra.

Partial=Penumbra

17. WHAT CAUSES DAY AND NIGHT ON EARTH?

Earth’s rotation causes day and night. It will be

day on the side of the Earth facing the sun,

while on the side of the Earth facing away from

the sun it will be night.

18. AS THE MOON MOVES FROM NEW MOON TO FULL MOON HOW DOES THE MOON CHANGE?

The moon waxes as it

moves from new moon

to full moon. It’s getting

bigger! That means that

we see more of the sunlit

side of the moon.

Then, it Wanes, it’s

getting smaller!

19. WHICH DAY HAS THE LONGEST NUMBER OF DAYLIGHT HOURS? SHORTEST NUMBER OF DAYLIGHT HOURS?

Longest number of daylight hours: the day

of the summer solstice.

Shortest day of daylight hours: winter

solstice.

20. DAY AND NIGHT ARE EQUAL IN LENGTH ON WHICH DAYS?

Day and night are approximately the

same length during the vernal and

invernal equinoxes.

Think EQUAL