SOL 6.1 1. Which instrument would most accurately and precisely determine the mass of a toy car? a. An electronic light meter b. A spring scale c. A triple-beam balance d. A graduated cylinder Answer: C SOL 6.1 2. The density of an object is dependent upon the object’s mass and — a. b. c. d. height area volume weight Answer: C SOL 6.1 3. The diagram shows a graduated cylinder containing water. From which position will the most accurate measure of the volume of the water be made? a. b. c. d. Position 1 Position 2 Position 3 Position 4 Answer: C SOL 6.1 4. Which of the following is used to measure the mass of an object? a. b. c. d. Balance Metric ruler Graduated cylinder Barometer Answer: A SOL 6.2 5. A burning candle is in the process of transforming -- a. b. c. d. heat energy into chemical energy chemical energy into light and heat chemical energy into mechanical energy chemical energy into nuclear energy Answer: B SOL 6.2 6. A group of people were concerned about a new coal-burning power plant that might be built in their neighborhood. What is probably their main concern? a. Burning coal produces more heat than burning wood. b. The heat from burning coal can drive generators that produce electricity. c. Burning coal produces sulfur dioxide which contributes to acid rain. d. There is more coal in the earth than there is oil and gas. Answer: C SOL 6.2 7. Which system shows a transformation from chemical to electrical and light energy? a. A car battery causes the headlights to shine. b. A candle burns and lights up the room. c. A display of fireworks in the night sky. d. An avalanche rolls down a steep mountain. Answer: A SOL 6.2 8. The location on the track where the train has the greatest potential energy is — a. 1 b. 2 c. 3 d. 4 Answer: A SOL 6.3 9. Convection is the result of — a. currents caused by the motion of heated molecules b. increases in the density of solids c. colder portions of liquids rising d. the lack of heat transfer Answer: A SOL 6.4 10. Of the states of matter, gas is the only state that -a. b. c. d. is fluid has mass is highly compressible has a definite shape Answer: C SOL 6.4 11. A proton has which of the following charges? a. Negative b. Neutral c. Positive d. Magnetic Answer: C SOL 6.4 12. A substance made up of two or more elements that have been chemically combined is called — a. an atom b. a compound c. an element d. a mixture Answer: B SOL 6.4 13. If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occurred? a. b. c. d. A chemical change A temperature change A phase change A physical change Answer: D SOL 6.4 14. Which of these belongs in the outermost shell (energy level) of an atom? a. b. c. d. Electrons Protons Neutrons Photons Answer: A SOL 6.4 15. Which of these is best classified as a mixture? a. b. c. d. Carbon dioxide Water Soil Iron Answer: C SOL 6.4 16. Which of the following lists the elements in order, from those having the least protons to those having the most protons in the atoms? a. O, N, B, Li c. O, S, Se, Te b. Na, S, Al, Cl d. Rb, K, Na, Li Answer: C SOL 6.4 17. The diagram above shows a block from the periodic table. The number six represents the a. b. atomic mass of the element carbon atomic number of the element carbon c. d. number of neutrons in the element carbon number of valence electrons in the element carbon Answer: B SOL 6.6 18. The quality of air is monitored by the government to determine whether a city needs to take steps to control air pollution. To best measure air quality, the air should be tested — a. once a year on a day with very little vehicle traffic b. once a day during rush hour when the most cars are on the road c. several times a day in all kinds of weather d. at night when the air is probably less polluted Answer: C SOL 6.6 19. Which of these is a result of burning fossil fuels? a. Acid rain b. Clean water c. Hydroelectric energy d. Solar energy Answer: A SOL 6.8 20.Which body in the solar system usually contains an atmosphere? a. b. c. d. An asteroid A planet A meteor A comet Answer: B SOL 6.8 21. Which of these planets in the solar system was the most recently discovered? a. b. c. d. Mars Venus Jupiter Pluto Answer: D SOL 6.8 A B 22. Which of these would be the best model to use to study the cause of the moon’s phase changes? C D Answer: A SOL 6.8 23. The force that holds the planets in orbit around the sun is called — a. b. c. d. motion friction pressure gravity Answer: D SOL 6.8 24. Which of these has the most influence on ocean tides? a. b. c. d. The magnetic field of the Earth Gravity between the Earth and the moon Radiation from the sun Electrical forces in the atmosphere Answer: B SOL 6.8 25. Which of the following causes the Sun to appear to set? a. b. c. d. The revolution of the Sun The rotation of the Earth The revolution of the Earth The rotation of the Sun Answer: B