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20 questions
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  • Q1
    In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?
    Question Image
    Position 1
    Position 2
    Position 4
    Position 3
    60s
    6.8a
  • Q2
    A car travels at a constant speed of 15 m/s for 2 minutes. The car increases its speed from 15 to 25 m/s during the next minute and then travels at a constant speed of 25 m/s for 2 more minutes. Which of the following graphs best represents the car’s motion during this 5-minute period?
    #texas/83c26e54-1342-4a8c-a460-b3bc9f4ea49f/C.png
    #texas/83c26e54-1342-4a8c-a460-b3bc9f4ea49f/B.png
    #texas/83c26e54-1342-4a8c-a460-b3bc9f4ea49f/D.png
    #texas/83c26e54-1342-4a8c-a460-b3bc9f4ea49f/A.png
    60s
    6.8d
  • Q3
    A student walks 2 km in 30 minutes. What is the student’s average speed in km/h? Be sure to use the correct place value.
    Users enter free text
    Type an Answer
    60s
    6.8c
  • Q4
    The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon. What energy transformations occur when propane gas is used to lift the balloon?
    Question Image
    Thermal → chemical → light
    Chemical → thermal → mechanical
    Chemical →mechanical → thermal
    Mechanical → light→ chemical
    60s
    6.9c
  • Q5
    The main parts of a working clothes dryer are shown in the diagram. This appliance dries clothes primarily by converting —
    Question Image
    mechanical energy to heat and electrical energy
    mechanical energy to heat and vaporization
    electrical energy to heat and mechanical energy
    electrical energy to heat and light
    60s
    6.9c
  • Q6
    A bus travels 20 km in 30 minutes. What is the average speed of the bus?
    30 km/h
    40 km/h
    20 km/h
    50 km/h
    60s
    6.8c
  • Q7
    A student drew the diagram below to show the movement of water through a hydroelectric dam. The student used the diagram to describe changes in the potential and kinetic energy of the water. At which location is the gravitational potential energy of the water the greatest?
    Question Image
    Location X
    Location Y
    Location W
    Location Z
    60s
    6.8a
  • Q8
    A student runs two times around a running path at a local park. Each lap is 3 km. The student completes the first lap in 20 minutes. The student then sits on a bench and rests for 5 minutes before completing the second lap in 25 minutes. Which graph best represents the student’s motion?
    #texas/3b333deb-3d2d-4f0a-bead-bafc9856e79e/A.png
    #texas/3b333deb-3d2d-4f0a-bead-bafc9856e79e/C.png
    #texas/3b333deb-3d2d-4f0a-bead-bafc9856e79e/D.png
    #texas/3b333deb-3d2d-4f0a-bead-bafc9856e79e/B.png
    60s
    6.8d
  • Q9
    A cook heats a meal in a microwave oven. What energy transformations occur between the microwave oven and the meal?
    Chemical energy → thermal energy → light energy
    Electrical energy → electromagnetic energy → thermal energy
    Chemical energy → electromagnetic energy → chemical energy
    Electrical energy → light energy → chemical energy
    60s
    6.9c
  • Q10
    A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions. Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?
    Question Image
    As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decrease.
    When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.
    When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.
    As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.
    60s
    6.8a
  • Q11
    A golfer collected data on the distance a golf cart traveled in a straight line and plotted it on a graph. Which of these does NOT describe the cart’s motion on this graph?
    Question Image
    The cart moved 11 m toward the starting point between 8 s and 10 s.
    The cart moved away from the starting point at a speed of 1 m/s for 2 s.
    The cart moved 24 m away from the starting point between 2 s and 5 s.
    The cart moved toward the starting point at a speed of 3 m/s between 7 s and 12 s.
    60s
    6.8d
  • Q12
    A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below. How many seconds did it take for the ball to travel 30 m during Kick 3?
    Question Image
    1.5 s
    2.0 s
    1.0 s
    0.5 s
    60s
    6.8c
  • Q13
    Four students were asked to classify the activities of the people in the picture below as examples of either potential or kinetic energy. Which student correctly classified the activities?
    Question Image
    #texas/97806e28-19b5-4a15-9f31-eb49e51af5a5/A.png
    #texas/97806e28-19b5-4a15-9f31-eb49e51af5a5/C.png
    #texas/97806e28-19b5-4a15-9f31-eb49e51af5a5/D.png
    #texas/97806e28-19b5-4a15-9f31-eb49e51af5a5/B.png
    60s
    6.8a
  • Q14
    When a lion eats a zebra and then uses the energy from the zebra to run, the lion’s body converts —
    chemical energy to mechanical energy
    chemical energy to light energy
    mechanical energy to chemical energy
    electrical energy to chemical energy
    60s
    6.9c
  • Q15
    The graph below shows distance over time. Which of these situations could be represented by this graph?
    Question Image
    A student walks 1.5 km to a friend’s house in 20 minutes. The two students then walk another 1.5 km to school in 60 minutes.
    A student walks 1.5 km to a friend’s house in 20 minutes. The two students then walk another 1.5 km to school in 40 minutes.
    A student walks 1.5 km to a friend’s house in 30 minutes. The two students then walk another 1.5 km to school in 30 minutes.
    A student walks 1.5 km to a friend’s house in 40 minutes. The two students then walk another 1.5 km to school in 20 minutes.
    60s
    6.8d

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