6 th Period MOON KIOSK

1. 6th PeriodMOON KIOSK Please read and take notes on the following presentation. Remember, you will have an assessment during your next class!

2. The Structure of the Moon • 3,476 km in diameter • It is one-fourth of Earth’s diameter • Moon’s gravity is 1/6th as strong as Earth’s • Moon’s mass is 1/8th of the Earth’s • Average density is the same as Earth’s • There is no air or liquids on the moon • Temperature ranges from 100°C to -170°C

3. The Origin of the Moon Billions of years ago, an object about the size of Mars collided with Earth. Material from that plus Earth’s outer layer was put into orbit around the rest of Earth. Later on that material was combined to form the moon. That was the theory called the Collision Theory.

4. The Moon • The moon is earth’s closest neighbor. • It takes the moon about 27.3 days to revolve around earth. • Where the moon earth and sun are decides the phases of the moon eclipses and tides. • The near side of the moon faces earth and the far side faces away. • The moon rotates on it ‘s own axis. The moon at one of its phases.

5. The Different stages • There are different stages of the moon. • As the moon revolves around the earth and the earth revolves around the sun, the position of the sun change. • The phase of the moon you see depends on how much of the sunlit side of the moon faces earth. • It is 384,400 kilometers from earth. • If it was a highway to the moon it would take you more than five months to get there. These are some phases that you may recognize of the moon.

6. Phases of the Moon • The different sizes and shapes of the moon are called phases. • The phase of the moon depends on how much the sunlit side of the moon faces Earth during its revolution. • Takes 27.3 days for the moon to revolve around the sun.

7. Different Phases • There are 8 phases if the moon. • A full cycle of phases takes 29.5 Earth days.

8. Eclipse • When the moon’s shadow hits Earth or Earths shadow an eclipse is formed • Happens only when an object in space comes between the sun and another object, and casts a shadow on that object • 2 types- lunar and solar

9. Solar Eclipse • Moon passes between the earth and the sun blocking sunlight from reaching earth • The Darkest Part of the moons shadow is the umbra • The largest part of the moons shadow is the Penumbra • Can not be seen anywhere on earth

10. Lunar Eclipse • Only occurs on a full moon when the earth is directly between the moon and the Sun. • Can be seen anywhere where earth is visible. • A partial lunar eclipse occurs when the moon passes partly into the umbra of earths shadow

11. The Forces Of Tides The rise and fall of water is known as tides. The force of gravity pulls the moon and Earth towards each other. Tides occur mainly because of differences in how much the moon pulls on different parts of Earth.

12. The Forces of Tides cont. As Earth rotates, the moon’s gravity pulls water towards the point of Earth’s surface closest to the moon. There are two places for high tides and two places for low tides on the Earth. Tides can also create beach erosion.

13. The Forces Of Tides cont. -Spring tide: The combined forces produce a tide with the greatest difference between low and high tide. -Neap tide: A tide with the least difference between low and high tides.

14. The Forces Of The Moon Diagram to the left: High tide on the left, low tide on the right.