
7th Grade Semester 1 Exam
Authored by Sam Gerhart
Physics
8th Grade
Used 7+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many variables should be tested in a correctly performed scientific experiment?
Zero
One
Two
Three
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a controlled scientific experiment, the _______ variable is manipulated or tested by the researcher.
Control
Dependent
Constant
Independent
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Why do scientists attempt to replicate the results of other scientist's experiments?
To learn from them.
To take the experiment one step further.
Because it is easier than coming up with their own idea.
To determine if the original results were accurate.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mechanical energy is the sum of two types of energy-kinetic energy and potential energy of position. Which of the following is an example of an object that has kinetic energy?
A. A snail crawling across a leaf.
B. A computer monitor sitting on a desk.
C. A tightly wound spring in a windup toy.
D. A roller coaster car just before it goes downhill.
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which set of words below make the following statement about energy correct? "Energy cannot be ______ or ______. Energy ______ from one form to another."
Increased, decreased, flows
Added, removed, moves
Created, destroyed, transforms
In motion, at rest, cannot change
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ball is sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?
It is lost as gravitational energy.
It is converted to kinetic energy.
It is destroyed as the ball moves.
It is used to make the ball slow down.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The heat from the Sun travels through space to the Earth. What method of heat transfer is being described?
Radiation
Conduction
Convection
Condensation
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