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Ms. Buccola's Midterm
Test Description: Scientific Method, Energy, and Simple Machines
Instructions: Answer all questions to get your test result.
1) If the results from your experiment do not support your hypothesis, what should you do? You should:
A
Change your data to fit your hypothesis.
B
Modify your hypothesis and retest.
C
Not do anything.
D
Repeat the investigation until your data agrees with the hypothesis.
2) Which of the following increases the reliability of a scientific explanation?
A
Repeatable test data
B
Several likely explanations
C
Notes taken after an investigation
D
Vague statements
3) Which of the following questions can science NOT answer?
A
What is last year’s most popular book?
B
Why do bears hibernate in the winter?
C
Where is it that waves in the ocean form?
D
Why do the leaves on trees change colors in the fall?
4) A hypothesis can be described as:
A
A type of statement made by researchers when they are trying to get funding
B
A wild guess about something you think might go wrong
C
A hunch that says what will happen later today
D
A prediction that explains what will happen in an experiment
5) Which of the following is a form of the inclined plane?
A
Wheel and Axle
B
Lever
C
Screw
D
Pulley
6) What is a machine?
A
Any device that helps people do work
B
Objects used to move something
C
Motorized devices only
D
A device with only two parts
7) Which of the following causes the efficiency of a machine to be less than 100%?
A
Friction
B
Power
C
Work
D
Mechanical Advantage
8) What is a simple machine?
A
A device with three or more parts that moves a single load
B
A machine made of one or more simple machines that push or pull
C
A device with one part that moves a single load
D
Any machine that pushes or pulls
9) What is a force?
A
Momentum
B
A Push or Pull
C
Acceleration
D
Velocity
10) Net forces are ______________.
A
Momentum forces
B
Action-at –a-distance forces acting on an object
C
Contact forces acting on an object
D
All the different forces acting on an object
11) What does the Law of the Conservation of Energy state? Energy cannot be:
A
Given off through heat waves.
B
Transferred from one to another
C
Changed into different forms.
D
Created or destroyed
*select an answer for all questions
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