Forces Question Preview (ID: 10908)
Science Chapter 18.
TEACHERS: click here for quick copy question ID numbers.
Which situation is work being done?
a) Sammy kicking a soccer ball
b) Sara pushing against a wall
c) Maria holding a box
d) Lonny thinking of a song
What effects the gravitational force between objects?
a) pulls
b) height
c) temperature
d) mass
Why is a simple machine used?
a) to reduce friction
b) to reduce work
c) to make work easier
d) to reduce buoyancy
What does buoyant force act against when pushing up on objects?
a) gravity
b) magnetism
c) work
d) unbalanced forces
Which force is used when a bar magnet picks up nails?
a) gravitational force
b) magnetic force
c) frictional force
d) buoyant force
Which is NOT a simple machine?
a) lawnmower
b) seesaw
c) lever
d) door knob
What are three examples of an inclined plane?
a) doorknob, wheel, and axle
b) pulley, ramp, blade
c) wedge, chisel, axe
d) lever, fulcrum, and crane
Two girls push a box to the left with a force of 20 N each. Another girl pushes on the box to the right with a force of 20 N. What is the net force?
a) 0 N
b) 20 N to the right
c) 60 N to the left
d) 20 N to the left
Which term describes the forces that act on a soccer kicked by a player?
a) balanced
b) unblanced
c) combined
d) simple
Two teams are playing tug of war, but neither side moves. Which term describes the forces?
a) balanced
b) unbalanced
c) weak
d) strong
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