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WorksheetsPhysical Science fall final practice
Total questions: 30
Worksheet time: 15mins
A scientific hypothesis is
A synthesis of a collection of data that includes well tested gases
An educated guess that has yet to be proven by experiment
A guess that has been tested over and over and always found to be true
A phenomenon about which competent observers can agree
A scientific theory is
A synthesis of a collection of data that includes well tested guesses
An educated guess that has yet to be proven by experiment
A guess that has been tested over and over and always found to be true
A phenomenon about which competent observers can agree
In science, changing your mind when confronted with evidence that does not agree with your thinking is seen as
A weakness
essential to scientific progress
The feature that makes a hypothesis scientific is that there is
And experiment that can confirm or refute it.
A large number of people support it.
Truth on this side of the person making the hypothesis.
A theory that supports the hypothesis.
Which one of these statements is a scientific hypothesis?
The universe is surrounded by a second universe, which cannot be detected.
And undetected energy source is at the center of the earth.
The backside of the moon has cities about the size of Chicago.
Michael Jordan is the greatest basketball player of all time.
The weight of a 2 kilogram bag of grapes is
About 10 N
about 20 N
About 30 N
More than 30 N
The law of acceleration is also known as what law?
Newton’s First law
Newton’s Second law
Newton’s Third law
Newton’s Fourth law
The law of inertia is also known as what law?
Newton’s first law
Newton’s second law
Newton’s third law
Newton’s fourth law
Whirl a rock at the end of a string and follows a circular path. If the string breaks the rock tends to follow a
Circular path.
Straight path
Spiral path.
The law of action and reaction is what law?
Newton’s first law
Newton’s second law
Newton‘s third law
Newton’s fourth law
A 20 N force and a 15 N force acts on an object in opposite directions. What is the net force on the object?
35 N
20 N
15 N
5 N
Name the law: bowling pins will not fall unless the bowling ball hits them
Newtons first law
Newtons Second law
Newtons third law
Newtons three laws can describe and predict the _________ of just about any object.
Volume
Mass
Motion
A sea scallop moves by shooting Jets of water out of it shell. What law does this illustrate?
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
And action force and it’s reaction forces are equal and in the ___________ direction
Parallel
Opposite
Same
Name the law: it takes more forced to throw a bowling ball then a basketball.
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
Name the law: a fireman turns on a hose and is knocked backwards.
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
What is the net force of a 200 kg crate sitting at rest on a factory floor?
zero
200 kg
2000 N
None of these
Name the law: you pull out the table cloths from under the dishes at dinner and they do not move.
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
Pushing a full grocery cart is much harder and requires more force than pushing an empty cart. What law?
Newton’s 1st Law
Newton’s 2nd Law
Newton‘s 3rd Law
What happens to the speed of the wagon as the rain collects inside of it?
It remains constant
It increases
It decreases
Which has more momentum: a car stopped at a red light or a bike moving at 15 MPH?
They are equal
The car
The bike
Cannot determine using the information provided
The formula for calculating kinetic energy is 1/2 mass times ________ squared
Velocity
Weight
Inertia
Time
When you catch a fast moving baseball with your bare hand, it’s a good idea to ...
hold your hand rocksteady.
do whatever you like with your hand since you have no control over impulse.
move your hand in the direction the ball is moving.
move your hand toward the moving ball.
When the speed of an object is doubled its momentum _______.
doubles
decreases
quadruples
remains unchanged in accord with the conservation of momentum
Can a bullet have the same momentum has a truck?
Yes
No
Most modern vehicles have padded dashboards. This reduces collision injuries by...
Increasing the drivers change in momentum.
Increasing the time of impact.
Increasing the force of impact.
Reducing the drivers change in momentum.
mechanical energy applies to ...
kinetic energy.
conservation of momentum.
potential energy.
both potential and kinetic energy.
Raising a heavy load requires work. Raising it twice as high requires…
half as much work.
twice the work.
the same work.
four times the work.
The kinetic energy of a cannonball fired from a cannon is…
less than the kinetic energy of the recoiling cannon.
greater than the kinetic energy of the recoiling cannon.
the same as the kinetic energy of the recoiling cannon.
None of these
