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Measures 8 skills from
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39 questions
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- Q1Which of the following best describes the relationship between speed, velocity, and acceleration?Velocity and speed are the same, but acceleration is a type of speed.Speed is the rate of change of velocity, and acceleration is velocity in a given direction.Speed is a scalar quantity, velocity is speed with a direction, and acceleration is the rate of change of velocity.Acceleration is how fast something is moving without direction, and velocity is acceleration with a direction.30s8.6b
- Q2If you drive a car at a constant velocity of 50 km/hr to the east and then suddenly turn south, maintaining your speed, which of the following statements is true?Both your speed and velocity remain unchanged.Your speed increases, and your velocity remains the same.Your speed remains the same, but your velocity changes.Your velocity increases, but your speed remains the same.30s8.6b
- Q3A student runs in a straight line for 100 meters north in 20 seconds, then immediately runs 100 meters back to the starting point in 20 seconds. What is the average velocity of the student?5 m/s0 m/s10 m/s5 m/s north30s8.6b
- Q4Which part of the electromagnetic spectrum helps astronomers detect and study thermal radiation emitted by objects in space?X-raysUltravioletInfraredGamma rays30s8.8c
- Q5A car travels north for 3 hours at 60 km/h and then turns east and travels for 2 hours at 40 km/h. What is the car's average speed for the entire journey?52 km/h55 km/h48 km/h50 km/h30s8.6b
- Q6Which of Newton's laws explains why a person feels pushed back into their seat when a car suddenly accelerates?Newton's Third Law of MotionNewton's Second Law of MotionNewton's First Law of MotionNone of the above30s8.6c
- Q7How does Newton's Third Law of Motion apply to the operation of a rocket launch?Objects at rest stay at restFor every action, there is an equal and opposite reactionEvery object in a uniform state of motion tends to remain in that state of motion unless an external force is applied to itForce equals mass times acceleration30s8.6c
- Q8In an amusement park ride where participants are spun around in a circle, which of Newton's laws explains why riders feel pushed against the walls of the ride?Newton's First Law of MotionNewton's Second Law of MotionNewton's Third Law of MotionNone of Newton's laws apply30s8.6c
- Q9What is the main purpose of using a control group in an experiment?To serve as a standard for comparison against the experimental groupTo confuse the results of the experimentTo increase the number of participants in the studyTo ensure the experiment takes longer to complete30s8.3a
- Q10Why do astronauts experience weightlessness in space?None of Newton's laws directly explain weightlessnessNewton's First Law of MotionNewton's Third Law of MotionNewton's Second Law of Motion30s8.6c
- Q11How do low-pressure systems depicted on weather maps usually affect the local weather?They result in cool, stagnant air and fogThey cause clear skies and dry conditionsThey increase temperatures and decrease humidityThey bring cloudiness, precipitation, and sometimes storms30s8.10b
- Q12When a tennis ball is hit by a racket, which of Newton's laws explains the change in direction of the ball?Newton's Second Law of MotionNewton's Third Law of MotionNewton's laws do not specifically address thisNewton's First Law of Motion30s8.6c
- Q13A soccer ball is kicked diagonally into the air. What causes the ball to eventually change direction and move downward?Electric forceThe ball's colorMagnetic forceGravity30s8.6a
- Q14A ball is initially at rest on a flat surface. Which of the following actions will change the speed or direction of the ball?Shining a light on the ballPushing the ball forwardPlacing a book next to the ballLetting the ball sit undisturbed30s8.6a
- Q15A car accelerates from rest to 60 km/hr north in 5 seconds. What is the average acceleration of the car?300 km/hr/s0.2 km/hr/s12 km/hr/s60 km/hr/s30s8.6b