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LAB- 5 E's And EM's
Test Description: Lab report, electromagnetism
Instructions: Answer all questions to get your test result.
1) Which variable values should be the same for all groups in the experiment?
A
Unknown Variable
B
Dependent Variable
C
Control Variable
D
Independent Variable
2) Biel believes that her plants grow so well because she is always playing music in her room. What is a question she might ask to test this?
A
Does a dying plant hate music?
B
Does music have an effect on plant growth?
C
Does plant growth make music sound better?
D
Which music groups does plant like?
3) Which variable should you know before you start your experiment?
A
Control
B
Independent
C
Unknown
D
Dependent
4) Which variable do you test (the effects of) in a scientific investigation? Hint: This is the same variable that you will change for every group.
A
Unknown
B
Independent
C
Control
D
Dependent
5) What would be an independent variable in an experiment where the testable question is, Which paper towel brand is the strongest?
A
brand of paper towel
B
number of times each brand is tested
C
amount of weight placed on each towel
D
strength of the paper towel
6) An instrument which uses magnet to give direction is known as
A
compass
B
vacuum cleaner
C
lock
D
motor
7) What do magnets do?
A
Attract all types of objects
B
Attract wooden objects
C
Attract iron objects.
D
Attract plastic objects.
8) A substance consisting of a coil of wire with an iron core and is only magnetized when an electric current flows through it is called
A
electromagnet
B
magnet
C
battery
D
coil
9) The north pole of one magnet attracts
A
the north pole of another magnet
B
none from the choices
C
he south pole of another magnet.
D
either the north pole or the south pole of another magnet.
10) You can use electricity to make a magnet.
A
i don't know
B
false
C
true
D
maybe
*select an answer for all questions
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