Quest ion 1? The Earth’s rotation takes about

3. Quest ion 1? The Earth’s rotation takes about A.) 365 days B.) 6 months C.) 24 hours D.) 1 month C.) 24 hours L F

5. Quest ion 2? Earth has seasons because A.) its axis is tilted A.) its axis is tilted B.) the distance between the Earth and the sun changes C.) it rotates on its axis D.) the temperature of The sun changes L F

7. Quest ion 3? Day and night are caused by the Earth’s A.) tilt B.) rotation on its axis B.) rotation on its axis C.) revolution around the sun D.) eclipses L F

9. Quest ion 4? One complete revolution of Earth around the sun takes about A.) one year A.) one year B.) one rotation C.) one season D.) one eclipse L F

11. Quest ion 5? Conservation of mass states that A.) mass canappear and disappear magically B.) The amount of atoms change C.) The amount of matter In a chemical rxn doesn’t change C.) The amount of matter In a chemical rxn doesn’t change D.) None of the above L F

13. Quest ion 6? pH is … A.) for acids only B.) a scale that measures whether something is acidic or basic B.) a scale that measures whether something is acidic or basic C.) a scale of 14-28 D.) for bases only L F

15. Quest ion 7? The moon has no atmosphere because of its relatively weak A.) color B.) size C.) craters D.) gravity D.) gravity L F

17. Quest ion 8? Which of these describes the shape of the Milky Way galaxy? A.) barred B.) spiral B.) spiral C.) irregular D.) elliptical L F

19. Quest ion 9? Covalent Bonds are when atoms A.) lose electrons A.) lose electrons B.) gain electrons B.) gain electrons C.) share electrons D.) form double bonds C.) share electrons L F

21. Quest ion 10? Which color star indicates the hottest surface temperature A.) yellow B.) red C.) white D.) blue D.) blue L F

23. Quest ion 11? A solar eclipse can only occur during the _____ phase A.) full moon B.) crescent moon C.) quarter moon D.) new moon D.) new moon L F

25. Quest ion 12? The phase of the moon you see depends on A.) how much of the moon’s surface is lit by the sun B.) how much of the sunlit side of the moon faces Earth B.) how much of the sunlit side of the moon faces Earth C.) whether or not there is an eclipse D.) where you are on the Earth L F

27. Quest ion 13? Atoms with fewer than four electrons will A.) gain electrons B.) form covalent bonds C.) be very stable D.) lose electrons D.) lose electrons L F

29. Quest ion 14? Which of the following is the term used to name a cluster of stars, nebulae, gases, dust, and planets? A.) solar system B.) constellation C.) galaxy D.) Oort cloud C.) galaxy L F

31. Balance this equation and state what type of reaction it is C3H8 + 02 CO2 + H20 A.) C3H8 + 502  3CO2 + 4H20 Double replacement B.) C3H8 + 02  CO2 + H20 A.) C3H8 + 02  CO2 + H20 D.) C3H8 + 02  CO2 + H20 C.) C3H8 + 02  CO2 + H20 L F

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