WorksheetsScience Ch. 13 Test
Total questions: 14
Worksheet time: 27mins
Which complex machine uses mainly human force to operate?
truck
airplane
washing machine
bicycle
When you ride a roller coaster, what makes your body squish down into the seat at the bottom of a hill?
gravity
friction
Newtons
Inertia
Machine A does 13 joules of work in 1 hour. Machine B does 19 joules of work in 1 hour. Which of the following statements is true?
Neither machine used and power.
Both machines used the same amount of power.
Machine A used more power.
Machine B used more power.
Which fore keeps a satellite in orbit?
gravity
friction
electricity
magnetism
A baseball player hits a ball. What effect does the ball have on the bat?
The ball has no effect on the bat.
The ball and bat hit each other with the same amount of force.
The ball hits the bat with less force than that of the bat.
The ball hits the bat with more force than that of the bat.
What object has periodic motion?
car
Earth
fish
Pendulum
When you raise or lower a flag on a flag pole you are using a simple machine called a _______.
lever
wheel and axle
pulley
inclined plane
_______ is the rate at which work is done.
force
energy
equilibrium
power
An object resists changes in motion because of _______.
inertia
energy
gravity
friction
_______ is the rate at which velocity changes.
power
force
inertia
acceleration
A _______ is a device that makes work easier.
force
joule
newton
machine
_______ is done when a force moves an object.
work
motion
inertia
gravity
When all the forces acting on an object are balanced, the object is in _______.
balance
tune
equilibrium
motion
Gravity is a _______ that pulls object toward the center of the Earth.
force
tool
machine
factor
