Question 1(Multiple Choice Worth 2 points) Susan shakes a bottle of oil and vinegar salad dressing, then sets it on the table.

Question 1(Multiple Choice Worth 2 points)Susan shakes a bottle of oil and vinegar salad dressing, then sets it on the table. After a while, the oil rises to the top and the vinegar settles on the bottom of the bottle. Why does this happen? A.Oil has less volume than vinegar. B.Oil is less dense than vinegar.C. Vinegar has more mass than oil. D.Vinegar has more weight than oil.Question 2(Multiple Choice Worth 2 points)What is true about energy? A.Energy cannot be created during an ordinary chemical reaction. B.Energy is used up during an explosion.  C.There is more energy after a chemical reaction than before the reaction.D. When water melts, energy is created in the form of heat. Question 3(Multiple Choice Worth 2 points)What energy conversion occurs when a battery-powered car rolls across the floor?  A.Stored chemical energy is converted to mechanical energy. B.Stored electrical energy is converted to mechanical energy. C.Stored mechanical energy is converted to mechanical energy. D.Stored nuclear energy is converted to electrical energy.Question 4(Multiple Choice Worth 2 points)What does mass measure? A. Amount of matter in an objectB. Gravity’s effects on an objectC. Size of an objectD. Weight of an objectQuestion 5(Multiple Choice Worth 2 points)What is a measure of average kinetic energy of the particles in a substance?  A.caloriesB. joulesC. kineticsD. temperatureQuestion 6(Multiple Choice Worth 2 points)Which of the following is an example of kinetic energy? A.chemical energyB. gravitational energyC. nuclear energy D.thermal energyQuestion 7(Multiple Choice Worth 2 points)What type of energy does a ball on top of a hill or a child on top of a slide have?A. gravitational energyB. mechanical energy C.radiant energy D.stored mechanical energyQuestion 8(Multiple Choice Worth 2 points)If you are using a triple beam balance, you are measuring an object’s A. density. B. mass.C. volume. D.weight.Question 9(Multiple Choice Worth 2 points)Which measurement changes based on the strength of gravitational force? A.length B.massC. sizeD. weightQuestion 10(Multiple Choice Worth 2 points)If you were going to measure the amount of space a liquid occupies, what should you use? scale B.meter stick C.graduated cylinder D.triple beam balance

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