FREE EARTH SCIENCE AND STUDY GAMES ABOUT FORCE

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FREE EARTH SCIENCE AND STUDY GAMES ABOUT FORCE

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -79 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: How does the smooth, streamlined shape of airplanes help them fly more easily?

• It decreases their mass.
• It reduces friction with air particles.
• It increases friction between the wings.
• It changes the pull of gravity

Answer:

B Question 2: Which of the following would take the least amount of force to move if it ran out of gas?

• A large minivan
• A small compact car
• A truck with a trailer
• A school bus

Answer:

B

Question 3: Before doing an activity that involves toy cars and a ramp, which of the following should be done first? A)Measure the distance across the room B)Make sure the stopwatch is working C)Check the wheels on the toy car D)Read through the entire activity

Answer:

D

Question 4: Gravitational attraction _____ as the masses of objects increase.

• decreases
• increases
• stays the same
• has no effect

Answer:

B Question 5: A rolling ball is struck by another ball thrown at it with greater force. What will happen to the rolling ball? A)It will not be affected. B)It will continue to roll as before. C)It will stop and go no further. D)It will change direction and speed.

Answer:

D Question 6: Gravity is responsible for all of the following phenomena EXCEPT: A)the orbit of the planets B)the phases of the moon C)keeping objects on the surface of the Earth D)holding the solar system together

Answer:

B Question 7: A rock and a brick fall off a forty-foot building at the same time.The brick is three times the mass of the rock.Which hits the ground first?A)The rock falls at one third the speed of the brick.B)The brick falls three time faster than the rock.C)Friction

Answer:

D Question 8: . A hand releases a ball at the top of a ramp. What force causes the ball to roll down the ramp?

• Friction
• Gravity
• Mass
• Speed

Answer:

B Question 9: . A ball has two forces acting on it. One force is pushing it to the left, and a larger force is pushing it to the right. In which direction will the ball move?

• Right
• Left
• Up
• Down

Answer:

A Question 10: The tendency of an object to resist change in its motion is known as _____.

• balance
• force
• inertia
• mass

Answer:

C Question 11: Downhill skiers put wax on the bottom of their skis to _____ between the skis and the snow.

• increase the force of gravity
• decrease friction
• increase the space
• decrease the distance

Answer:

B Question 12: A bus at rest has more inertia than a car at rest, mainly because the bus has greater _____.

• mass
• velocity
• density
• force

Answer:

A

Question 13: Friction between surfaces can be reduced by all of the following EXCEPT:

• smoothing the surfaces
• using wheels or rollers
• lubricating or oiling the surfaces
• increasing the mass of the objects

Answer:

D Question 14: All of the following would cause an object to increase its speed EXCEPT: A)increasing the force applied to the object B)removing some of the mass of the object C)applying a force in the opposite direction of motion D)adding another force to the objec

Answer:

C Question 15: Friction acts in a direction _____ to an object's direction of motion.

• similar
• parallel
• opposite
• perpendicular

Answer:

C Question 16: The support wires work to hold a heavy sign in place because they create _____.

• balanced combined force
• pulling friction force
• unbalanced gravitational force
• needed extra weight

Answer:

A Question 17: Which of the following forces oppose each other when a block of wood slides down a ramp? A)gravitational force and electrical force B)electrical force and magnetic force C)magnetic force and friction force D)friction force and gravitational force

Answer:

D