Earth Vocab … Lessons 1, 2, 3

1. Earth Vocab…Lessons 1, 2, 3 Quiz#1- Wednesday Review study materials!!

2. a body that orbits a planet. satellite

3. An object that orbits the sun • Large enough to have become rounded by its own gravity. planets

4. a streak of light produced when a small object burns up entering Earth’s atmosphere. meteors

5. is a cold mixture of dust and ice that gives up a long trail of light as it approaches the sun. comet

6. giant ball of hot gas • Tiny points of light stars

7. Is a pattern or groups of stars in the sky. constellations

8. Imaginary line that passes through Earth’s center and the North and South poles axis

9. Spinning of the Earth and moon around its axis. rotation

10. It takes the Earth 365 ¼ days to complete one • Movement of the Earth around the Sun or the movement of the moon around the Earth revolution

11. Earth moves around the sun in a regular, curved path called a(n) • Earth’s ______ brings it closer to the sun in January orbit

12. Caused by Earth’s tilted axis and its revolution around the sun seasons

13. If the Northern Hemisphere is tilted away from the Sun, what season is occurring? winter

14. What season occurs when part of Earth is tilted towards the Sun? summer

15. What seasons occur when the Earth is neither tilted toward or away from the Sun? Spring & Autumn/Fall

16. Sun appears farthest north of the equator and south each year • Longest day of the year in Northern Hemisphere and shortest day of the year in Southern Hemisphere solstice

17. The sun is directly overhead at the equator • Means “equal night” • 12 hours of daylight and 12 hours of night equinox

18. The Winter Solstice begins on December 21 or 22

19. The Spring Equinox begins on March 20 or 21

20. The Summer Solstice begins on June 21 or 22

21. The Fall Equinox begins on September 22 or 23

22. Attracts all objects to each other • Keeps the Earth in an orbit around the sun • Keeps the moon in an orbit around the Earth gravity

23. Amount of matter in an object • Remains constant mass

24. Measure of the force of gravity on an object • Changes depending on location weight

25. Every object in the universe attracts every other object Law of universal gravitation

26. Tendency of an object to resist a change in motion • Example: when a car is moving and suddenly stop; you keep moving forward inertia

27. An object at rest will stay at rest and an object in motion will stay in motion unless acted on by a force Newton’s first Law of motion