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Force and motion PMA 2

Quiz by Christina Christopher

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19 questions
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  • Q1
    1. Which of the following effects does weathering have on Earth’s surface?
    B. Weathering causes the breaking down of rocks.
    A. Weathering causes mudslides and landslides.
    C. Weathering causes the formation of a sand dune.
    D. Weathering causes the movement of sediment down a river.
  • Q2
    2. The box shown below is being acted on by four forces. Three of the forces are shown. What should the magnitude of the fourth force be for the forces on the box to be balanced?
    B. 30N
    C. 60N
    D. 80N
    A. 20N
  • Q3
    3. Luisa was investigating the effect of forces on the movement of a wood block. Her experimental design is shown below. For the block to begin move to the right, which of the following relationships must be true?
    C. Net force must be greater than zero and be in the direction of the spring scale.
    B. The net force must be greater than zero but with no particular direction.
    A. The net force must be equal to zero.
    D. Net force must be greater than zero and be in the direction away from the spring scale.
  • Q4
    Beau wants to buy a new skateboard. He wants to find out if the size of the wheels and the type of material the board is made from affects how far he can coast on the skateboard. He decides to compare two skateboard models that are the same size but are made of different materials and have different size wheels. He pushes off as hard as he can and stands on the skateboard until the skateboard comes to a stop. He conducts five trials with each skateboard. He keeps the pavement and course constant. He finds out that he can coast farther with Model A. What can Beau conclude from his investigation?
    A. Beau can conclude that the size of the wheels affects how far he can coast on the skateboard.
    B. Beau cannot conclude that the material of the board affects how far he can coast on the skateboard.
    C. Beau can conclude that the size of the wheels affects how far he can coast on the skateboard and that the material of the board affects how far he can coast on the skateboard.
    D. Beau cannot conclude from this test if the size of the wheels affects how far he can coast on the skateboard or if the material of the board affects how far he can coast on the skateboard.
  • Q5
    6. A museum is designing a new exhibit for vehicle safety. They want the exhibit to be very similar to the actual conditions drivers’ experience on the road. A scientist plans to visit an area where many crashes happen to observe and study the characteristics of the drivers’ experience. Which best explains why the scientist would choose to investigate the drivers’ road experience using systematic observations rather than an experiment?
    A. The research question involves changing one variable to see how it affects others
    D. The scientist’s research involves a conceptual model, which requires systematic observations to complete.
    C. The research requires detailed observations of interactions between drivers and their environment over time.
    B. The scientist does not have access to a laboratory in which an experiment can be performed.
  • Q6
    7. Devan drops balls made of various materials in a vacuum tube to test how the material of the ball affects the time it takes to fall. Vacuum tubes are devices that eliminate the effect of air resistance (a type of friction) on the balls as they fall. Each ball is dropped from the same height into the same vacuum tube. Devan measures the amount of time it takes each ball to hit the bottom of the tube resting on the floor. Which variables are held constant in this experiment?
    B. The time the balls take to hit the floor and the vacuum tube used.
    D. The height the balls are dropped from, and the vacuum tube used.
    A. The speed at which the balls fall, and the vacuum tube used.
    C. The material the balls are made from, and the vacuum tube used.
  • Q7
    8. A physicist wants other scientists to be able to perform the same experiment she performs in her laboratory. Which is the best way for the scientist to ensure her experiment is replicable by others?
    A. Repeat her experiment before publishing the results.
    D. Watch the other scientists complete the experiment over a video call.
    C. Write detailed notes of each part of the experiment as it is performed.
    B. Take photos of the experiment’s materials and setup.
  • Q8
    9. Which statement below best describes the use of scientific replication?
    C. A scientist conducts multiple trials of the same experiment and compares the results obtained.
    A. A scientist performs several different experiments and compares the results obtained.
    B. Multiple scientists independently perform the same experiment and compare their results.
    D. Multiple scientists observe another scientist’s work, and they compare their notes on the results obtained.
  • Q9
    10. Marnie went to watch her friend practice for an upcoming swimming competition. She plotted her friend’s movement for 10 minutes on the graph below. Which of the following explains what happened to the motion of Marnie’s friend between minute six and minute eight?
    A. Her friend slowed down.
    D. Her friend had a constant rate of speed.
    B. Her friend stopped swimming.
    C. Her friend increased her speed.
  • Q10
    11. Keesha ran out of time and could not complete the lab on motion. However, she turned in the results she recorded before the class period ended. She included the graph below as part of her report. Keesha correctly predicted how long it would take the object to move 4 feet. Using the graph below, what was Keesha’s prediction?
    A. 7 seconds
    B. 9 seconds
    C. 11 seconds
    D. 12 seconds
  • Q11
    12. Two friends want to decide whose car gets the best gas mileage. A car’s gas mileage is the number of miles a car can go for each gallon of gas it uses. They decide to fill the gas tanks of each car, a Honda Civic and Toyota Corolla, with the same amount and type of gas and compare how far each car travels before the tank reaches empty. Why is it important that the two cars get the same type of gas?
    C. It is not important for both cars to have the same type of gas because they are not testing which type of gas gets the best mileage.
    D. By using the same type of gas, the friends can learn both which car model gets the best mileage and which type of gas gives the best mileage.
    B. If the cars do not get the same type of gas, the friends cannot find out which car model has the best mileage.
    A. By using the same type of gas, the friends can learn which type of gas gets the best mileage.
  • Q12
    13. Anita produces this graph below showing the distance and time traveled of four wooden blocks across various surfaces. Which is the form of the investigation that would make best use of this graph?
    B. Research Project
    D. Systematic Experiment
    C. Observational Notes
    A. Field Study
  • Q13
    Students record information about the motion of a marble moving in a straight line across the floor. They record their measurements in the following table. 14. Students then prepare to plot this information on a line graph. They make a line graph with time on the x-axis and distance on the y-axis. How would the motion of the marble appear on the graph they constructed?
    B. A line that curves downward
    C. A flat, horizontal line (no slope)
    A. A line that curves upward
    D. A straight line that slopes upward (positive slope)
  • Q14
    Which of the following provides the strongest evidence that the forces acting on the marble are balanced?
    A. The marble’s motion across the floor is measured in units of m/s.
    B. The distance the marble travels across the floor increases over time.
    D. The marble stopped moving across the floor due to friction after traveling 36 meters in 12 seconds.
    C. The marble’s speed and its direction of motion across the floor do not change.
  • Q15
    16. A roller coaster manufacturer publisher wants to increase the rate at which its riders speed down the hill. Which of the following is NOT an independent (test) variable the roller coaster manufacturer could investigate?
    D. The type of track used to build the roller coaster.
    B. The time it takes the cart to fall 1000 feet.
    C. The number of carts attached to each train.
    A. The size of the cart on the track.

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