Pearson 6th Earth Science terms and defintions

1. Ch. 15- NTW Sun-Moon-Earth System

2. 1. __________- study of moon, stars, and other objects in space astronomy

3. 2. _____- imaginary vertical line around which an object spins axis

4. 3. _________- the circling of one object around another (1 revolution= 1 ____) revolution year

5. 4. ________- the turning motion of an object on its axis rotation

7. 5. _____- the actual path followed by a satellite; ______- oval, the orbits of our solar system’s planets orbit ellipse

8. 6. ________-- time when one pole is pointing directly at the Sun A. summer- __________; longest amount of daylight in the Northern Hemisphere; _____ Pole points towards the sun B. winter- ________________; shortest amount of daylight in the Northern Hemisphere; _____ Pole points toward the sun solstice June 21, 22 North December 21, 22 South

12. 8. ______- push or pull force

13. 9. _________________________- Newton’s law that says objects attract all others toward each other Law of universal gravitation

15. 10. ______- the amount of matter in an object 11. _______- the measure of the pull of gravity on an object mass weight

16. 12. _______- matter stays at ____ or continues in ______ unless acted upon by an _______________ inertia rest motion outside influence

19. 14.

20. A. ________- no lighted area visible from Earth B. ______- the visible portion of the moon is increasing waxing C. _______- the visible portion of the moon is decreasing waning D. ________- phase between new moon and first or last quarter E. _______- ¾ phase between full moon and first or last quarter gibbous crescent new moon F. __________-the entire lighted half of the moon is visible from Earth full moon

23. G. __________- sunlight reflected off the Earth and back to the moon Earthshine

24. 15. _____________- when the moon moves directly between the Sun and Earth and casts its shadow on part of Earth; only occurs during a ____ _____ solar eclipse new moon

26. 16. _____________- when the Earth casts its shadow on the moon; occurs only during a ____ ____ 17. _____- total shadow during a full moon 18. ________- partial shadow during an eclipse lunar eclipse full moon umbra penumbra

29. The End