12 questions
What does the word experiment mean in the sentence below?
The students did a fun experiment to learn about plants.
pardon
plan
reminder
test
What does the word research mean in the sentence below?
Lee did a lot of research about lions in the library.
bargaining
coaching
studying
training
What does the word invention mean in the sentence below?
Dusty built a wonderful invention that folds clothing.
a stick
a season
a new machine
a big disappointment
What does the word power mean in the sentence below?
If I flip a switch on the wall, it turns on the power.
bubble
electricity
lightning
sound
Why does a magnet stick to a refrigerator?
because the door is cold
because the door is sticky
because the door is made of iron
because the door is made of glass
Why are objects more likely to stick to the ends of a magnet?
The ends have glue on them.
The ends are the most powerful.
The objects are repelled by the ends.
The magnet is repelled by the objects.
What will happen if you try to put the north poles of two magnets together?
They will pull apart.
They will stick together.
They will create a motor.
They will create an electromagnet.
What pattern forms when you sprinkle iron filings around a magnet?
a pattern in the shape of the wire.
a pattern in the shape of the magnetic field.
a pattern in the shape of the North Pole of the magnet
a pattern in the shape of the South Pole of the magnet
What happens to an electromagnet when electricity is turned on in it?
it becomes a magnet
it loses its magnetism
it wraps a wire around itself
The wire around it loses its magnetism.
According to the article, when would the reader use an electromagnet?
anytime electricity is needed
if a magnet was needed at night
only if the reader operated a junkyard
if the reader wanted to control the magnetic force.
Why do junkyard use electromagnets?
to pick up iron filings
to pick up pieces of paper
to pick up and put down cars
to move dirt around the junkyard
What did Michael Faraday discover that a magnetic force could produce?
electricity
iron
lightning
water