1. Common Assessment #3 Energy Energy Resources Heat and Heat Transfer Newton’s 3 Laws Review of past concepts learned

2. Convection is the result of - Currents caused by the motion of heated molecules Increases in the density of solids Colder portions of liquids rising The lack of heat transfer

3. Which system shows a transformation from chemical to electrical and light energy? An avalanche rolls down a steep mountain A car battery causes the headlights to shine A display of fireworks in the night sky A candle burns and lights up a room

4. Which system shows a transformation from potential to kinetic energy? An avalanche rolls down a steep mountain A car battery causes the headlights to shine A display of fireworks in the night sky A candle burns and lights up a room

5. Which system shows a transformation from chemical to light energy? An avalanche rolls down a steep mountain A car battery causes the headlights to shine A display of fireworks in the night sky A basketball is held 1 meter in the air and dropped.

6. Where does the skateboard have the greatest potential energy? At the 1 position At the 2 position At the 3 position In between the 1 and 2 position

7. What type of energy change is occurring in the picture below? Mechanical energy to chemical energy Solar energy to nuclear energy Potential to kinetic energy Chemical energy to heat energy 3 2 2 1

8. What type of energy is occurring in the picture below at #3? Potential energy Kinetic energy Mechanical energy Solar energy

9. The combination of potential and kinetic energy is Heat Mechanical energy friction Chemical energy

10. What type of energy occurs first in a coal- burning power plant? Mechanical energy to electrical energy Thermal energy to electrical energy Thermal energy to mechanical energy Chemical energy to thermal energy

11. Which of the following are products of combustion? Heat and light Newly discovered elements Liquid and solid water Additional atoms

12. Which of the following is a nonrenewable resource? Solar collector Wind turbine Fossil fuel Hydroelectric generator

13. A flashlight uses three different forms of energy. Which of these show the energy changes in the correct order? Heat  chemical  light Mechanical  heat  chemical Electrical  mechanical  chemical Chemical  electrical  light

14. Which of the following will change water to ice? Adding heat Removing heat Stirring the water quickly Putting the water in the sunlight

15. Photosynthesis is an example of Heat energy Electrical energy Mechanical energy Chemical energy

16. Which of the following is an example of potential energy A ball rolling down a hill A glass sitting on a shelf A bird flying into the wind A car driving quickly down the highway

17. Which of the following is an example of kinetic energy A ball at the top of a hill A glass sitting on a shelf A bird sitting on a tree limb A car driving quickly down the highway

18. Insulation materials reduce heat loss because they Are poor conductors Block out the sunlight Reduce evaporation Promote convection

19. Water stored behind a dam is an example of what type of energy? Kinetic Chemical Solar Potential

20. Water released through a dam’s gate is an example of what type of energy? Kinetic Chemical Solar Potential

21. Fossil fuels such as gas, oil and coal are what kind of energy? Electric Chemical Solar nuclear

22. What type of energy does a windmill use? Electric Chemical Mechanical nuclear

23. Expansion joints such as these are put on bridges because the concrete expand and contracts. This happens when Chemicals get on the concrete The amount of light changes The concrete gets wet The temperature changes

24. A burning candle is in the process of transforming Chemical energy into light and heat Chemical energy into mechanical energy Chemical energy into nuclear energy Heat energy into chemical energy

25. Which of the following forms of energy would create acid rain? Solar energy Burning coal to create energy Hydroelectric (using water) energy Wind power (windmill) energy

26. A pendulum swinging from side to side is an example of kinetic energy continuously being changed to potential energy and back again. mechanical energy turning into solar energy. chemical energy turning into electrical energy, turning into light and heat energy. only potential energy.

27. Radiation and Convection is how you burn yourself by grabbing the handle of a hot pan on the stove. energy from the Sun is distributed around Earth. potential energy changes to kinetic energy. all liquids change to a solid.

28. If you are learning karate and break a board in half with a karate chop, which of the following has occurred? A chemical change A physical change A temperature change A phase change

29. You conduct an experiment to determine if basketballs bounce better on wood or concrete. What would indicate that your results might be valid? Three friends you know conducted the same experiment. Every year someone conducts this experiment at your school. A really smart student you know conducted the same experiment and got different results. Many students conducted the same experiment and got similar results.

30. What energy is easily converted into other forms of energy and is the most common one found is American households today? Heat energy Electric energy Nuclear energy Chemical energy

31. You want to know if an oak tree is more flexible than a maple tree. Which of the following experiments would be the best way to find this information. A. Put 100 grams on a board of oak and 200 grams on a board of maple and see which one bends without breaking. B. Put 300 grams on a board of oak and 300 grams on a board of maple and see which one bends without breaking. C. Put 500 grams on a board of oak and 100 grams on a board of maple and see which one breaks.

32. Ice cream melting is an example of a chemical change. a physical change. ice cream becoming a new element. increasing its mass.

33. The density of the box below is A. 20 g/cm 3 B. 10 g/cm 3 C. 5 g/cm 3 D. 100 g/cm 3 5CM 4CM 5CM Density = Mass Volume Mass = 500g

34. What happens to the state of water between points 4 and 5? 5 2 1 4 3 A.Water turns from a solid to a gas B.Water turns from a liquid to a gas C.Water turns from a gas to a liquid

35. What happens to the state of water between points 2 and 3? 5 2 1 4 3 A.Water turns from a solid to a gas B.Water turns from a liquid to a gas C.Water turns from a solid to a liquid

36. Which of the following would you use to measure Density? A)10.5 pounds/liters B)1050 grams/milliliter C)1.50 grams/ounces D)105 pounds/ounces

37. A student wishes to test the hypothesis that adding antifreeze to water lowers the freezing point of the water. What is the independent variable? A)Amount of water put into the container B)Amount of antifreeze added to the water C)Temperature at which water/antifreeze mixture freezes D)Type of thermometer used to measure the freezing point

38. A student wishes to test the hypothesis that adding antifreeze to water lowers the freezing point of the water. What is the dependent variable? A)Amount of water put into the container B)Amount of antifreeze added to the water C)Temperature at which water/antifreeze mixture freezes D)Type of thermometer used to measure the freezing point

39. Some student counted the number of of flowers in a given area. They counted the number of flowers and the different types of flowers. Which of these would be best to use to report the results? A C B D

40. If Chlorine gas(Cl2) reacts with Sodium(Na) to form salt (NaCl), which of the following is a balanced equation? A) Cl2 + Na NaCl B) Cl2 + 2 Na 2 NaCl C) Cl2 + Na 2 NaCl D) Cl2 + Na Na2 + Cl2

41. Mike and Bella were experimenting the effects of road salt on plant growth. To do this, they watered the plants daily with the same amount of salt water. What could improve their experiment? A) Watering half the plans with pure water and half with salt water B)Cooling the salt water before watering the plans C)Increasing the amount of salt to the water each day D)Adding food color to see how far the salt penetrates the plant

42. A student took the mass of 3 different bowling balls. Ball 1 has a mass of 10 g, ball 2 15 g and ball 3 8 g. IF they are rolling at the same speed, which ball would hit the pins with the most force? A)Ball 1 B)Ball 2 C)Ball 3 D)They will all hit at the same force

43. A boy jumps off a boat and the boat moves backwards. Which of Newton’s laws does this demonstrate? A)1 st law B)2 nd law C)3 rd law D)4 th law

44. A sheet of paper and a bowling ball were dropped at the same time, in a closed system where air resistance does not exist, which would hit the ground first? A)The bowling ball would hit first B)The sheet of paper would hit first C) They would hit the ground at the same time D)Neither of them would hit the ground

45. An object moving stays moving and an object at rest stays at rest describes which of Newton’s laws? A)1st B)2nd C)3rd D)4th

46. Force= mass times acceleration describes which of Newton’s laws A)1st B)2nd C)3rd D)4th

47. For every action there is an equal and opposite reaction, describes which of Newton’s laws? A)1st B)2nd C)3rd D)4th