History Of Space Exploration (Page 4 of 4) in pdf

History Of Space Exploration Page 4

Tides and Moon Phases

 Define tides:

The daily rise and fall of Earth’s waters on the shorelines.

 What causes the tides?

Caused by the gravitational pull between the Earth, moon, and Sun.

 Which has a greater affect on the tides, the Sun or the Moon? Why??

The Moon has a greater affect on the tide than the Sun because the Moon is much closer to the Earth

than the Sun.

 What is the difference between a spring tide and a neap tide?

During a neap tide, the sun and the moon are at right angles to each other. During a spring tide, the sun

and the moon are lined up.

 In the spaces below, draw a diagram of a spring tide and a diagram of a neap tide.

Spring Tide

Neap Tide

 Why do we see different phases of the moon?

As the Earth revolves around the Sun, the Moon revolves around the Earth.

The phase of the Moon you see depends on how much of the sunlit side of the moon is facing

Earth.

 Complete the following sentences:

o A solar eclipse happens when…

the moon passes between the

Earth and the Sun. The moon is blocking sunlight from reaching the

Earth.

o A lunar eclipse happens when…

the Earth passes between the

Moon and the Sun. The Earth is blocking sunlight from reaching the

Moon.

History Of Space Exploration Page 4