1. Unit 10: Space

2. The Sun, Earth, & Moon

3. Comparing the sizes of the Sun Earth Moon Click to compare the Earth, Moon, and Sun Another way to think about it... If the Sun were the size of a basketball... the Earth would be about the size of a pea.... the Moon would be about the size of a pinhead.... Watch a clip Click to hear song

7. Click on the Earth to see how it revolves Revolution and Rotation of the Earth,Moon and Sun. Revolution-to go around something else Rotation-to turn around itself What's the difference between rotation and revolution? Earth's Rotation Click to see

8. A teacher walking around desks A twirling ballerina The hands of a clock A car wheel If an object rotates, the center stays in the same place. Notice how the middle of the fan stays in the same spot while the rest of the fan travels in a circle around the middle. Is it Revolution or Rotation? People often get Revolution and Rotation confused! Here's a trick to help you remember the difference: If an object revolves, the whole object circles a center object or area. Click on the dog to watch a dog's revolution around the center of the pool. Notice how the whole dog moves around the center of the pool. Is the object showing REVOLUTION or ROTATION?

9. So, What is the EFFECT of our Earth's Rotation? DAYDAY NIGHTNIGHT How long does it take for Earth to make one complete rotation? About 24 hours (1 Day) The part of the Earth that is facing the sun is having what? The part of the Earth that is facing away from the sun is having what? night day

10. As the Earth is rotating, it appears as if the Sun is moving across the sky (apparent movement).  East to west- the Sun is stationary, but the Earth is turning - so the sun appears to rise in the east and set in the west.  Earth’s rotation causes Day and Night on our planet. The rotation of the Earth also causes shadows to change. Shadows are longest in the early morning and at dusk (just before sunset). Shadows are shortest at noon 12:00pm because the Sun is directly overhead.

11. So, What is the EFFECT of our Earth's Revolution? Seasons To understand how this works, we need to study about: *Earth's Orbit *Earth's Axis click

12. Earth's orbit is almost completely circular and centered around the sun, but some planets' orbits are not click to watch a clip Earth's Orbit An orbit is the path that something makes as it revolves around another object click to explore orbit shapes The Earth follows an ORBIT around the SUN return So the Earth is always about the same distance from the sun. Do you remember what that distance is? 93 million miles

13. Click to watch a clip Earth's Axis An AXIS is an imaginary line that runs through the center of an object. The Earth's Axis is tilted 23.5 degrees

14. So, how does Earth's AXIS and it's ORBIT around the sun cause us to have SEASONS? If the Earth weren't titled on its axis, the same parts of the earth would always receive the same amount of direct sunlight and their weather would remain the same throughout the year Watch the Earth's Revolution around the sun

15. Sun sunlight Earth and the Moon are always half lit. I t's a little more complicated with moonlight. Since the moon revolves around the Earth, the amount of the half lit moon that we see changes depending on where the moon is in its month long rotation around the earth. We call these different amounts of moonlight Moon Phases. We've already learned that the half of the Earth that's lit is experiencing daytime and the other half is having nighttime. Let's learn more! http://youtu.be/OZIB_leg75Q Animation of the moon's rotation and revolution.

16. The Phases of Our Moon There are 8 moon phases. Each one shows a different amount or area of moonlight. The moon takes about one month to go through each of the 8 phases. see the moon phases

17. Sun First Quarter Waxing Crescent New Waxing Gibbous Full Waning Gibbous Last Quarter Waning Crescent

18. Match each phase with its name. Waxing Gibbous Waning Crescent Full New First Quarter Waning Gibbous Last Quarter Waxing Crescent

19. Ice has been found in the dark parts of craters where no sunlight hits the surface. The moon is covered with craters caused by the impact of meteors. The moon has 1/6 the gravity of Earth. The moon is made of rock. The moon does not produce its own light. It reflects light from the sun. The moon has mountains, some of which are over 10,000 feet tall. The moon rotates on its axis once about every 27 days. The moon revolves around the Earth. The moon has no atmosphere and no weather, weathering or erosion Moon Facts - Click on the moons

20. A closer look at O ur Sun

21. The sun is about 110 times the diameter of the Earth The sun is believed to be about 4.6 billion years old The sun is an averaged- sized yellow star Sun Facts... Watch a clip about the sun!

22. The Sun is the only star in our solar system. The sun is about 110 times the diameter of the Earth The sun is a ball of hot burning gases The sun is an averaged- sized yellow star Sun Facts... The dark cooler spots on the Sun are called sunspots. The Sun rotates on its axis. The Sun is one of trillions of stars in space. Explosions on the Sun are called Solar Flares.

23. Parts of the Sun Click the globe to see a video on the Sun. h ttp://www.youtube.com/watch?v=x6RYgQ2jxCU&feature=related The sun is made up of mainly Hydrogen and Helium gas

24. Complete the venn diagram. Sun Moon Earth Label life gravity rotates weathering Erosion atmosphere craters valleys rock mountains star no water No weatheringno life active volcanoes coldest temperatures hottest temperatures

25. Complete the venn diagram. Sun Moon Earth Label life gravity rotates weathering Erosion atmosphere craters valleys rock mountains star no water No weathering no life active volcanoes coldest temperatures hottest temperatures

26. Let's take a closer look at O ur Solar System In Our Solar System, there are 8 planets C an you find the mistake? Watch a Clip Can you name them in order? Remember this! M y Very Energetic Mother Just S erved Us Nachos

27. Tides Ti des are the rising and falling of the ocean as a result of the gravitational pull of the moon. There are two high tides at a specific location every 24.5 hours. There is a high tide on the side of the Earth facing the moon due to the moon’s gravity and on the side of the Earth directly opposite from the moon due to the inertia of the ocean waters. Approximately twice a month the Earth has a spring tide and a neap tide. Spring tide = an “extra high” high tide that occurs when the sun, earth, and moon are aligned and the gravitational pull of the moon and sun work together. Neap tide = a “lower than normal” high tide that occurs when the moon is at a right angle to the sun and the gravitational pulls of the moon and the sun oppose each other.

28. In the 16th century, an astronomer named Copernicus developed a HELIOCENTRIC model of the universe, in which the sun was the center of the universe with the earth and other planets orbiting around the sun. Soon after, an astronomer named Galileo expanded upon and offered proof of Copernicus's sun-centered model of our solar system. Today, we understand that the sun is the center - but not of the universe, The sun is the center of our solar system. We continue to learn more and more about our solar system, galaxy, and our universe with new scientific discoveries. An earth-centered model of the universe was developed thousands of years ago by Greek philosophers. This earth-centered model is called a GEOCENTRIC model. How has our understanding of our solar system changed over time? Watch a clip Two famous Greek philosophers who wrote about this are P tolemy and A ristotle. Most people believed this Geocentric view of the universe to be true for a long, long, time.

29. Watch a clip of JFK speaking about this! Watch a clip of the first moon landing National Aeronautics & Space Association The NASA Apollo missions added greatly to our understanding of the moon. Apollo Program *Program of NASA - 1961-1975 *17 Missions *Sparked interest in space exploration around the world. *Accomplished many FIRSTS! *Apollo 11 - July 20, 1969 - First human to walk on the moon!! Who? * Neil Armstrong *Buzz Aldrin *Michael Collins President John F. Kennedy strongly supported the Apollo Program and set the goal of landing an American on the moon by 1970

30. Attachments Using_Models_to_Illustrate_the_Scale_of_Space.asf Our_Sun_Is_a_Star.asf Planets.asf The_Scientific_Revolution__Astronomy.asf A_Dream_Realized - apollo 11 landing.asf The_Space_Race_Begins.asf