Mod-Forces at a Distance L1-L5 Assessment

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Which of the following is a component of a homemade speaker?

• copper coil and magnet
• balloon
• carbon dioxide tube

________ is the change we make to the system each time we test during a scientific experiment.

• Independent variable
• Dependent variable
• Constant Variable

_________ is the variable to observe or measure for effects caused by a change in the independent variable.

• dependent variable
• Constant Variable
• Controlled variable

_____________ is what is kept the same throughout the experiment. (ex. same type of weather, running surface)

• Dependent variable
• Constant Variable
• Controlled variable

If the question mark was the compass, which way would the red needle be pointed?

• toward the right
• pointed up
• pointed down

A coil of wire connected to a battery is a special type of magnet called a __________.

• electron telemagnet
• electromagnet
• permanent magnet

If we place a magnet in a vacuum chamber what will happen?

• The magnet will still have magnetic properties.
• The magnet will no longer attract for repel another magnet
• The magnet will explode.

What happens when two north poles of magnets are placed together?

• they attract
• they repel
• the magnets have no reaction

What characteristics do magnetic substances have?

• They fall faster when you drop them.
• They can push or pull objects without touching.
• They will turn off and on.