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Questions (1)
When an object is in motion, it possesses what type of energy?(1 point)
Responses kinetic energy kinetic energy potential energy
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Answers (23)
20. People use oven mitts to avoid getting burns when moving hot metal pans while cooking. Which physical property of the metal pan requires the use of an oven mitt when it is hot?(1 point) Responses High thermal conductivity High thermal conductivity Low
19. Convection ovens cook food more evenly than a standard thermal oven. Which statement explains how a convection oven works?(1 point) Responses Hot air is transferred when heat radiates from a thermal burner. Hot air is transferred when heat radiates
18. Which investigation would best show the transfer of heat energy without any type of matter as a medium?(1 point) Responses an investigation of conduction using collisions between particles an investigation of conduction using collisions between
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17. Two samples of pure water are mixed with food coloring. One sample is red, and the other is blue. When the two water samples are combined, the red water floats on top of the blue water. Which statement best explains this result? (1 point) Responses The
16. An aluminum block has a starting temperature of 300oC. The block is placed into 200 milliliters of water, which has a temperature of 20oC. What heat transfer will occur?(1 point) Responses Heat will flow from the block to the water until both have a
15. Betsy uses an electric alarm clock to wake up for school. What energy transformation happens in the alarm clock to help her wake up?(1 point) Responses electrical energy converts to heat energy electrical energy converts to heat energy electrical
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14. As energy is transferred or conserved, some of that energy becomes unavailable to do work. What happens to this unavailable energy?(1 point) Responses The unavailable energy is given off as heat The unavailable energy is given off as heat The
13. The picture illustrates the solar panels that power all of the appliances in Joshua's house. What energy transformations occur that enable Joshua to bake cookies for his family in the oven? (1 point) Responses light energy → electrical energy →
12. Jennifer uses different forms of energy when she gets ready for school in the morning. Which table below correctly shows the forms of energy used in Jennifer's actions?(1 point) Responses
11. The picture below shows a pinwheel that Bobby has in his front yard. Often Bobby sees his pinwheel spinning, but other times it does not spin. Which statement best explains what makes his pinwheel spin? (1 point) Responses Energy from the ground shakes
10. Kim is upstairs, but walks downstairs to the kitchen for a snack. Which statement correctly describes the types of energy she has at the top of the stairs and as she walks down the stairs?(1 point) Responses potential energy at the top of the stairs;
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9. Rebecca climbs the ladder of a large water slide, waits her turn at the top, and then slides down the slide into a pool. Which answer best describes the energy changes during her time on the slide?(1 point) Responses kinetic → mechanical → potential
8. The pendulum in the diagram below swings from position A to B. If we don’t consider friction, what happens to the total mechanical energy as the pendulum swings from position A to position B? (1 point) Responses It is not conserved It is not conserved
7. In an investigation of energy transfer, a student observes a roller coaster at locations A, B, C, and D. Then she creates the graph below of the roller coaster’s potential and kinetic energy at each location.
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6. If you are at an amusement park and you ride a slingshot, how does your potential energy compare to your kinetic energy at the top of the shot? (1 point) Responses The kinetic energy and potential energy are the same. The kinetic energy and potential
5. An object’s gravitational potential energy depends on the object’s mass, the strength of the gravitational field, and what other variable?(1 point) Responses
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. In the diagram below, two objects of the same size and mass are released from rest at the starting position. Object 1 was released before Object 2 was released. The diagram below shows the positions of Objects 1 and 2 a short time after both were
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