Welcome

1. Welcome to Science Jeopardy! CDB #3 Review Feb-Mar 2010

2. Click anywhere on question slide for answer. Click the Back button to return to this slide. BONUS Science Jeopardy Mixtures &Solutions Physical Properties Energy Light Electricity Circuits 5 5 5 5 5 5 10 10 10 10 10 10 15 15 15 15 15 15 20 20 20 20 20 20 25 25 25 25 25 25

3. Physical Properties – 5 pts. Science Investigation Students mixed a spoonful of vinegar with a small amount of baking soda in a bowl. They wrote a description of what they observed. Which of these should the students have avoided while doing this investigation? • Using a metal teaspoon • Tasting the mixture • Stirring the vinegar • Using a plastic bowl • B Back

4. Physical Properties – 10 pts. Some students were studying properties of water. One student placed a cup containing 80 mL of water in a freezer. Another student placed an identical cup with 40 mL of water in a different freezer. Which of the following will be the same for both cups of water? • The volume of the frozen water • The mass of the frozen water • The temperature at which the water freezes • The time it takes the water to freeze • C Back

5. Physical Properties – 15 pts. The table below shows the volume of four water samples tested in a laboratory If sample W boils at a temperature of 100 C, at what temperature would sample Z be expected to boil? • 25 C • 50 C • 100 C • 200 C • C Back

6. Physical Properties – 20 pts. Which of the following is the best thermal insulator? • Cardboard • Styrofoam • Glass • Plastic • B Back

7. Physical Properties – 25 pts. What conclusion can be drawn about the boiling point of water? • Boiling point of water remains constant at 100° Celcius • The amount of water affects the temperature at which water boils • The boiling point of water does change. • The boiling of water remains constant at 80° Celcius • A Back

8. Energy – 5 pts. • How does a drum produce a sound when someone strikes it with drum sticks? • The air around the drum vibrates. • The drumsticks vibrate. • The drumhead and the air inside the drum vibrate. • The drumhead and the air around the drum vibrate. • C Back

9. Energy for 10 points What is the first thing that happens when the electrical energy in a cloud moves suddenly from the cloud to the ground? • thunder sounds • lightning flashes • wind blows • rain falls • B Back

10. Energy for 15 pts. • G Back

11. Energy for 20 points Solid Liquid This picture shows what process or change of state? • Freezing • Boiling • Condensing • J. Melting • J Back

12. Energy – 25 pts. A flashlight can produce light energy. It uses a battery as part of a circuit to produce light. What type of energy does the battery have?A. solar energyB. physical energyC. chemical energyD. nuclear energy • C Back

13. Light – 5 pts. • Light energy is usually refracted when • passing through glass. Which of • the following will reflect light energy? • Moving Water • Mirror • Eyeglasses • D. Microscope • B Back

14. Light for 10 points Which of the following is not luminous(Does not produce its own light)? • the sun • the moon • electrical lights • stars DAILY DOUBLE • B Back

15. Light – 15 pts. • Which of the following is an example of refraction? • A. When light travels between air and water • B. When light comes into contact with a • mirror • When light travels between water and • glass • D. A and C • D Back

16. Light – 20 pts. • Which of the following is formed because of refraction? • A. a shooting star from gases • B. a comet of dust and ice • a rainbow from sunlight and water • D. none of the above • C Back

17. Light – 25 pts. B A Light travels In a straight line until it strikes an object. Both diagrams A and B show that? A. Light is reflected by a glass lens B. Light is reflected by a mirror C. Light is refracted by a glass lens D. Light is refracted by a mirror • C Back

18. Which of the following is not an insulator? • a wooden nickel • B. a piece of aluminum • C. a piece of cloth • D. a plastic comb Electricity - 5 pts. DAILY DOUBLE • B Back

19. Electricity – 10 pts. • What is formed when you switch on a lamp? • transmission current • a magnetic current • electric current • J. conduction current • H Back

20. Electricity – 15 pts. • A light bulb uses electrical energy to produce . . . • light and solar energy • light and sound energy • light and heat energy • J. mechanical energy DAILY DOUBLE • H Back

21. Electricity – 20 pts. • What is an advantage of an electro- magnet over a permanent magnet? • an electromagnet attracts metals containing iron • an electromagnet has more than one path • an electromagnet can be turned off and on • J. an electromagnet is stronger • H Back

22. Electricity – 25 pts. • Which of the following makes an electromagnet? • paper clip, string, battery • iron nail, magnet, battery • iron nail, wire, battery • J. tin can, wire, magnet • H Back

23. Circuits – 5 pts. • A student wants to make the light bulb glow. All of the following objects can complete the circuit EXCEPT . . . • an iron nail • a metal clip • a plastic comb • a copper penny • C Back

24. Circuits – 10 pts. • What will happen when the circuit is opened? • the nail will move towards the battery • the nail will vibrate • the paper clips will fall off the nail • more paper clips will move towards the nail • C Back

25. The picture shows a circuit that a student • built. Why won’t the bulb light? • The circuit does not have a power source. • The circuit does not have a switch. • The circuit has only one light bulb. • The circuit is not complete. Circuits – 15 pts DAILY DOUBLE • D Back

26. Which of the following are conductors of electricity? • Gold • Copper • Iron • All of the above Circuits – 20 pts • D Back

27. Circuits – 25 pts. • Which of the following would create a closed circuit? • A. a switch, a bulb and batteries • B. a bulb and wires • a battery, a bulb and wires • D. none of the above • C Back

28. Mixtures & Solutions– 5 pts. • A teaspoon of clean dry sand is added to a cup of warn salt water. What is most likely to happen after the mixture is stirred and then placed on a table for 5 minutes • The amount of water will increase • The salt will float to the top • The cup will heat up • J. The sand will settle to the bottom • J Back

29. Mixtures & Solutions– 10 pts. • A small bowl contains a mixture of toothpicks and glass marbles. The easiest way to separate the mixture without touching it would be to ? • Add glue to the mixture • Place a magnet in the bowl • Pour the mixture into a paper cone • J. Add water to the bowl DAILY DOUBLE • J Back

30. Mixtures & Solutions– 15 pts. Which process will separate the sugar from a mixture of sugar and water? • Stirring the mixture • B. Evaporating the water • C. Adding more water • D. Adding more sugar • B Back

31. Mixtures & Solutions– 20 pts. • Which of the following is an example of a mixture that is also a solution? • Hint: To form a solution one substance has to dissolve • Water and sand • Vinegar and sand • Salt and sugar. • Water and salt • D Back

32. Mixtures & Solutions– 25 pts. • How would you separate a mixture of iron filings and sand? • Using a magnet • Floating the sand. • evaporate the iron. • J. Using a filter. • F Back

33. Daily Double A B C D E Back

34. A drop of water is placed on a small dot typed on a piece of paper. The dot . . • appears smaller because the water is absorbed by the paper • appears larger because the water bends light passing through it. • looks the same • disappears slowly • B Back

35. Earth Science for 15 pts. Which of these best shows the relationship between Earth, the moon, and the sun? • D Back

36. A switch in a circuit is used to . . . A. provide extra current. B. slow the flow of current. C. break or connect the flow of current. D. prevent electrical fires. • C Back

37. Which instrument will be affected when it is placed next to wire carrying electric current? • voltmeter • battery • compass • J. thermometer • H Back

38. Which statements are true? • The boiling point of water is always 100o C. • The freezing point of water is always 0o C. • Boiling and freezing points are constant. • All of the above • D Back