Non-Contact forces
Non-contact forces occur between objects that are:
a) touching
b) not touching
c) are electrically charged
b) not touching
Magnetic Materials contain what 3 things? Hint: INC
Iron, Nickel, Cobalt
Where are magnets the weakest?
In the middle
as objects get farther away from magnets, the strength of the magnet ___________.
decreases
In order to have reliable results in an experiment, we should:
a) test something once
b) test something multiples times.
b) test something multiple times.
What are 2 examples of non-contact forces?
Magnets and gravity
Magnets have how many poles?
2
Opposite magnetic poles _________ each other.
attract
As objects get closer to a magnet, the strength of the magnet ____________.
increases
Which was more reliable in our gravity experiment:
A) counting in our heads
b) using a digital timer
b) using a digital timer
Magnetic force is a non-contact force that ______ or ________ an magnetic materials.
Attracts or repels
What is the N pole on a magnet?
North
like magnetic poles ________ each other.
repel
Reliability is affected by the amount of data collected and where or not it can be recreated
A) true
B) false
A) true
gravity is a non-contact force that pulls object ________.
towards the ground (centre of the earth)
What is the S pole on a magnet?
South
Name this type of magnet.
Bar magnet
To collect reliable data I should:
a) try something different each time.
b) follow the same steps each time.
b) follow the same steps each time.
Where is a magnet the strongest?
At both of the poles.
Nam this type of magnet
horseshoe magnet