HIGLIGHT THE SINGLE CORRECT RESPONE
• Which of the following activities best illustrates the practices of the scientific method? • Deciding on the materials necessary to build a terrarium.
• Following the instructi
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HIGLIGHT THE SINGLE CORRECT RESPONE
• Which of the following activities best illustrates the practices of the scientific method? • Deciding on the materials necessary to build a terrarium.
• Following the instructions to construct an electric generator.
• Measuring the time for an object to fall from different heights.
• Designing an electric circuit for a radio.
• What cannot be the outcome of a science experiment? • A theory is supported.
• A theory is disproven.
• A theory is proven.
• A theory is further refined.
• A truck makes a sharp turn and a box falls out of the truck bed. This is best explained using:
• the law of inertia.
• Newton’s second law of motion.
• the law of action and reaction.
• Newton’s third law of motion.
• If an object increases its speed by the same amount each second, its acceleration: • also increases each second.
• is constant.
• decreases each second.
• can either increase or decrease depending on the circumstances
• Which of the following is NOT a part of the scientific method? • Making a guess about the possible outcome.
• Perform experiments to test the predictions.
• Organize and analyze the data collected.
• Repeating a measurement until you get the desired result.
• Formulating a rule based on the experimental results.
• Consider a basketball player making a jump shot. Once the player's feet leave the floor, the player's acceleration:
• depends on the speed of the player.
• depends on the forward motion of the player.
• depends on the athletic ability of the player.
• is equal to 10 m/s2.
• The acceleration of an object is caused by: a. a change in speed.
• a change in velocity.
• a change in direction.
• an unbalanced force.
• Which of the following describes an accelerated motion? • Driving uphill at a constant speed.
• Driving downhill at a constant speed.
• Driving around a circle at a constant speed.
• Driving on a straight road at a constant speed.
• A ball is placed at the top of a hill and then released. After 5 seconds it has a speed of 20 m/s. What is the average acceleration of the ball? • 10 m/s2
• 0 m/s2
• 100 m
• 5 m/s2
• 4 m/s2
• A circus performer with a weight of 700 N hangs from the middle of a bar supported by a vertical rope at each end. What is the tension force in each rope? • 700 N
b. 1400 N
c. 350 N
d. 1050 N
e. 0 N
• Which object has the greatest momentum? • A truck parked on the street.
• A man walking up a flight of stairs.
• A race car going around a turn at high speed.
• A bicyclist rolling downhill.
• A salmon swimming upstream.
• Which of the following has the greatest density?
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