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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
Control Variable
B
Dependent Variable
C
Unknown 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
Which music groups does plant like?
B
Does music have an effect on plant growth?
C
Does plant growth make music sound better?
D
Does a dying plant hate music?
3) Which variable should you know before you start your experiment?
A
Control
B
Unknown
C
Dependent
D
Independent
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
Independent
B
Unknown
C
Dependent
D
Control
5) What would be an independent variable in an experiment where the testable question is, Which paper towel brand is the strongest?
A
amount of weight placed on each towel
B
strength of the paper towel
C
brand of paper towel
D
number of times each brand is tested
6) An instrument which uses magnet to give direction is known as
A
lock
B
motor
C
vacuum cleaner
D
compass
7) What do magnets do?
A
Attract wooden objects
B
Attract plastic objects.
C
Attract iron objects.
D
Attract all types of 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
battery
B
coil
C
electromagnet
D
magnet
9) The north pole of one magnet attracts
A
the north pole of another magnet
B
he south pole of another magnet.
C
none from the choices
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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