Gravitational Fields
Electric Fields
Magnetic Fields
Electromagnetism
Science Things
100
The image shows a satellite in orbit around earth. What force is responsible for keeping the object in orbit?
Gravity
100
Do opposite charges attract or repel?
Attract
100
The area around a magnet where the force of magnetism occurs is called a . . .
Magnetic field
100
What three items are needed to create an electromagnet?
Battery
Copper wire
Iron nail
100
What did we build to help the team escape the demobats?
Electromagnet
200
How does mass affect gravity?
As mass increases, gravity increases.
200
Electric field line arrows always go from. . .
Positive to negative
Or
Negative to positive
Positive to negative
200
Where are magnets strongest?
At the poles
200
True or False: You can use a magnet to move electrons and create an electric current. What are two ways to increase the strength of an electromagnet?
True
200
What did we build to help the team get the elevator working again?
Motor
300
How does distance affect gravity?
As distance increases, gravity decreases.
300
Are these ions attracting or repelling? How do you know?
They are repelling because they are moving away from each other.
300
What would happen to these two magnets?
They would repel.
300
What are two ways to increase the strength of an electromagnet?
Use a stronger battery
Add more coils
Tighten the coils
300
What did we use to represent the demobats in the lab?
Washers
400
TRUE OR FALSE?
A 1000 kg hippo feels more gravitational pull than a 100 g mouse.
True
400
Which one of these charges is stronger? How do you know?
The second ion is stronger because it has more field lines.
400
Magnetic field lines always extend from . . .
North to South
or
South to North
North to South
400
If you disconnect the wire from the battery, what will happen to the magnetic field?
It will go away.
400
How did we create a magnetic field without a magnet?
We created an electromagnet--ran electricity through a coil of copper wire looped around an iron nail.
500
Which of the following is dependent on the force of gravity: Mass or Weight?
Weight
500
What are the two factors that can impact the strength of an electric field?
Size of the charge
Distance between charges
500
What's happening here? How do you know?
The magnets are attracting because the field lines are connecting between the two poles.
500
How can you create an electric field with a magnet?
Move a magnet through a coil of copper wire
500
In the clip we watched on Wednesday, Steve kept saying they were stuck in a ________________ elevator.
Russian