2. Hosted by Mrs. Riggio

3. 100 200 400 300 400 Earth Sun Moon Universe 300 200 400 200 100 500 100

4. Row 1, Col 1 Scientists believe the Earth and our solar system formed about _____ years ago. 5 billion years

5. 1,2 The closest star to Planet Earth is _____. Venus Sun North Star Sun …the only star in our solar system!

6. 1,3 This celestial object orbits, revolves around, the Earth; it is Earth’s natural satellite. Moon …the moon’s gravity causes our ocean tides

7. 1,4 Green plants, producers, are able to produce food. What are The 4 things plants need for photosynthesis? Water, Sunlight, carbon dioxide, and chlorophyll

8. 2,1 The thinnest layer of the Earth. Crust… made of solid rock

9. 2,2 The only objects in the Universe that produce their own light… moons, stars, planets Stars …balls of burning gases

10. 2,3 True or False The Moon shines in the sky because it produces light. FALSE …it reflects the Sun’s light

11. 2,4 We have ____ because the Earth is tilted at about 23 ½° and it orbits the Sun… When the Sun rises higher in the sky, due to Earth’s tilt, it gives more concentrated heating to Earth’s surface. More daylight hours, due to Earth’s tilt, produces more heating of Earth’s surface. Seasons

12. 3,1 Another name for the Earth’s crust. lithosphere

13. 3,2 The planets, moons, and other celestial bodies stay in their orbits around the Sun because of this force: Gravity

14. 3,3 When we look at the Moon over several days, it seems to change shape. These moon shapes are called __. phases

15. 3,4 How long does it take The Earth to make one revolution orbit the Sun one time? 365 and ¼ Days

16. 4,1 How long does it take the Earth to rotate (spin or turn) one time? 24 hours (1 rotation = 1 day)

17. 4,2 The Earth revolves (orbits) around the Sun. The Earth’s path around the Sun is slightly elliptical (oval), It’s path is almost a ________. Circle

18. 4,3 How much of the Moon is always “lit” by the Sun? ½

19. 4,4 Earth recycles the water on Its surface; it is called the ___. Liquid water changes to a gas = Rain, sleet, hail, and snow are forms of Water vapor condenses to form clouds = Water Cycle evaporation precipitation condensation

20. 5,1 One year on Earth is the time it takes the Earth to ______. Orbit the Sun (revolution)

21. 5,2 The layer of gases that surround a planet. _______ and ________ are the two main gases that blanket Earth. atmosphere nitrogenoxygen

22. 5,3 A group of billions of stars is called a ____ Galaxy (Earth is in the Milky Way galaxy)

23. 5,4 The Sun appears to move across the sky each day; it rises in the east and sets in the west. The Sun is not moving, it is the ____ Earth’s Rotation (spin)