1. Midterm Jeopardy Categories: Five. Daily Doubles: Two.

2. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Mathematical Operations Density Science & Indirect Measurement Waves Earth

3. If you enter 488.7 x 560 into a calculator, you get 273672. This is the answer expressed in correct sig figs:

4. What is 270,000?

5. This is 6.547 x 10 -3 expressed in scientific notation:

6. What is 0.006547?

7. This is the basic unit of mass in the metric system.

8. What is the gram?

9. This is how many mL are in 1 L.

10. What is 1000?

11. Using dimensional analysis, this is the number of seconds in 5.80 hours.

12. 5.80 hr x 60 min x 60 sec = 1 1 hr 1 min 20880 sec (sig fig = 20,900 sec)

13. You have an object with a density of 5.00 g/cm 3 and a volume of 15 cm 3. This is the mass of that object.

14. What is 75 g?

15. Object A has a density of 3.14 g/mL. Object B has a mass of 180 g and a volume of 130 mL. This is the denser object:

16. Object A. (Because Object B has a density of 1.4 g/mL.)

17. Density is this kind of property of matter.

18. What is a physical property?

19. The image to the right depicts a density column containing 4 fluids in layers: A, B, C, and D. You know that you poured in four liquids with the densities 0.09 g/mL, 3.21 g/mL, 0.78 g/mL and 1.54 g/mL. Which liquid has which density? ABCDABCD

20. A = 0.09 g/mL. B = 0.78 g/mL. C = 1.54 g/mL. D = 3.21 g/mL.

21. DAILY DOUBLE! Both teams will have time to work on this question, you need not be the first raised hand to answer it. Choose up to 1000 points to wager. Your wager must be less than your current point total.

22. You have a tank filled with oxygen gas. You force even more oxygen into this tank, doubling the mass of the oxygen in the tank without changing its volume. What happens to the density of the oxygen?

23. It becomes twice as dense.

24. A car traveling at a given speed covers 1170 km in 18 hours. Use equal ratios to show how much ground the car could travel in 34 hours at the same speed.

25. 1170 km = x 18 hr 34 hr x = 2210 km -> sig figs -> 2200 km

26. Newton operated off of a model of the solar system which had the planets orbiting around the sun. The model he used is called a ____centric model.

27. What is heliocentric?

28. The diagram shows an attempt to measure a tree’s height (T) by measuring the length of its shadow (TS) and the shadow (OS) of an object (O) of known height. Show one way to set up an equal ratio for this problem. T O TS OS

29. TS = OS or T = O T O TS OS or OS = TS O = T O T OS TS

30. A massive, powerful explanation in science is called this, while a description of a relationship between two quantities is called that.

31. Theory; Law

32. A scientist wants to know if birds sing different songs at different air temperatures. To test the effect of air temperature on birdsong, she records the songs of 60 captive male field sparrows after adjusting the temperatures of their individual enclosures. Identify her independent, dependent, and a control variable.

33. Independent: Air temperature Dependent: Birdsong Controls: All field sparrows, all in their own enclosures, all males, all captive birds

34. If two waves have constructive interference, this is what the amplitude of the resulting wave will be.

35. The amplitudes of the two waves added together.

36. This is the wave property that is not in either of the wave equations.

37. What is amplitude?

38. If a seismic wave travels at 65 m/sec, and each wave cycle lasts for 18 seconds, this is the distance from crest-to-crest or trough-to-trough.

39. Wavelength = 1170 m -> sig figs -> 1200 m

40. A light photon (wave) that is higher in energy will have ____ frequency and ____ wavelength, and so it will be closer to _____ on the visible light spectrum.

41. Higher; lower; blue or violet

42. DAILY DOUBLE! Both teams will have time to work on this question, you need not be the first raised hand to answer it. Choose up to 1000 points to wager. Your wager must be less than your current point total.

43. Name valid units that could be used for each of the five properties of waves.

44. Speed = m/sec, miles/hr, etc. Wavelength = m, in, km, etc. Amplitude = m, in, km, etc. Period = sec, min, hr Frequency = cycles/sec (Hz)

45. These are the four major layers of the Earth, from shallowest and least dense to deepest and most dense.

46. Crust, mantle, outer core, inner core

47. These are three phenomena or outcomes that are explained by the Earth’s magnetosphere.

48. Answer may include: Northern/Southern Lights, protection from solar wind and space particles, navigation by some animals, human navigation by magnetic compass

49. The Big Bang Theory states that the universe is _____. A key piece of evidence is that starlight is shifted towards the ____ end of the visible spectrum, which the Doppler Effect tells us means the stars are moving ______ us.

50. Expanding; red; away from

51. These are the states of matter of the inner core, outer core, mantle, and crust. And the layer responsible for our magnetosphere is the _____.

52. 1)Solid, liquid, “plastic solid,” solid 2) Outer core

53. In the Northern Hemisphere, the shortest day of the year is marked with this number in the diagram, and it has this name.

54. 3, winter solstice.