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Physics Quiz on Speed

Quiz by Mr.MD Showket Hasan

Grade 8
Science
Thailand Core Curriculum

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20 questions
Show answers
  • Q1
    1. According to Source 1, what two pieces of information are needed to determine the speed of an object?
    Distance travelled and time taken.
    Mass and velocity.
    Force and displacement.
    Acceleration and time taken.
    30s
    SC8.FM.1
  • Q2
    2. What simple definition of speed is provided in Source 1?
    The change in velocity over time.
    The rate at which an object changes its position.
    The total distance travelled over a specific time interval.
    How fast something is moving.
    30s
  • Q3
    3. Source 1 uses the example of three cars travelling the same distance in different times to illustrate speed. What conclusion can be drawn from this example?
    The car that travels the distance in the shortest amount of time has the greatest speed.
    All three cars have the same speed because they cover the same distance.
    The car that travels the distance in the shortest amount of time has the lowest speed.
    Speed cannot be determined from the information given.
    30s
  • Q4
    4. Source 1 mentions several units for measuring speed. Which of the following is NOT a unit of speed?
    Miles per hour.
    Seconds.
    Metres per second.
    Kilometres per hour.
    30s
  • Q5
    5. What type of motion does Source 1 use as an example when defining speed?
    Periodic motion.
    Rectilinear motion.
    Circular motion.
    Rotational motion.
    30s
  • Q6
    6. A cyclist travels 60 kilometres in 2 hours. What is their average speed?
    60 kilometres per hour.
    120 kilometres per hour.
    30 kilometres per hour.
    15 kilometres per hour.
    30s
  • Q7
    7. A train travels at a constant speed of 100 kilometres per hour for 3 hours. What distance does it cover?
    33.3 kilometres.
    100 kilometres.
    3,000 kilometres.
    300 kilometres.
    30s
  • Q8
    8. A runner completes a 10 kilometre race in 40 minutes. What is their average speed in kilometres per hour?
    10 kilometres per hour.
    6 kilometres per hour.
    4 kilometres per hour.
    15 kilometres per hour.
    30s
  • Q9
    9. Two cars are travelling on the same road. Car A travels 100 kilometres in 1 hour, while Car B travels 150 kilometres in 2 hours. Which car has a greater average speed?
    Cannot be determined from the information given.
    Car B.
    Car A.
    Both cars have the same average speed.
    30s
  • Q10
    10. A plane flies 500 kilometres south in 1 hour. It then changes direction and flies 300 kilometres east in 30 minutes. What is its average speed for the entire journey?
    800 kilometres per hour.
    500 kilometres per hour.
    200 kilometres per hour.
    400 kilometres per hour.
    30s
  • Q11
    11. Source 1 explains that calculating speed often provides the average speed over a distance. Why is it important to distinguish between average speed and constant speed?
    Average speed represents the overall speed over a period, while constant speed implies the speed remains the same throughout the motion.
    Average speed and constant speed are the same thing.
    Only average speed can be calculated.
    Constant speed is a more useful concept than average speed in physics.
    30s
  • Q12
    12. How does the concept of speed help us understand and compare the motion of different objects?
    It provides a quantifiable measure of how quickly an object covers distance, allowing for comparison of movement rates.
    It reveals the forces acting upon an object, explaining the cause of motion.
    It tells us the exact position of an object at any given time.
    It indicates the direction of motion, allowing us to predict future positions.
    30s
  • Q13
    13. If an object is moving at a constant speed, what can we say about its velocity?
    Its velocity must be zero.
    Its velocity must also be constant.
    Its velocity may be constant, or it may be changing if the object is changing direction.
    Its velocity must be increasing.
    30s
  • Q14
    14. Source 1 uses the ratio of distance and time to define speed. How does this mathematical relationship help explain the concept of speed?
    It highlights that speed is a measure of how much distance is covered within a specific time frame, emphasizing the interdependence of distance and time.
    It proves that objects moving for longer durations always have greater speeds.
    It demonstrates that speed is always a constant value.
    It shows that speed is unrelated to distance or time.
    30s
  • Q15
    15. Why is it important to specify units when measuring and communicating speed?
    Units provide a standardized way to express measurements, ensuring clear communication and accurate comparisons of speeds.
    Units are irrelevant in physics.
    Units only apply to distance, not speed.
    Units are only necessary when calculating average speed.
    30s

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