Magnets
What is magnetism?
When one magnetic material attracts or repels another magnetic object.
What is friction?
The opposing force of 2 objects moving against each other.
What is gravity?
A force that brings objects back down to earth.
Does the x-axis go horizontal (side to side) or vertical (up and down)
Horizontal
What does terrestrial mean?
Relating to the land
When do magnets repel each other?
When like poles are facing each other. (S and S or N and N)
The _________________________ the surface, the more friction.
The _________________________ the surface, the less friction.
rougher = more friction
smoother = less friction
Everything has a gravitational pull. When does the force of gravity become noticeable?
When the object is VERY large, like a planet/moon/sun
What is the origin?
Where the x and y-axis meet.
What is a constant/control variable?
The part of the experiment that stays the same
The _______________________ the magnetic objects, the greater the magnetic force.
closer
Is friction a contact or non-contact force?
Contact force
How do the tides relate to gravity?
The gravitational pull from the moon pulls on the oceans causing the tides.
The __________________________ the force the faster the object moves.
greater
What is a dependent variable?
The part of the experiment that you measure (height, time, etc.)
1. Pulling magnetic objects
2. Repelling magnetic objects
3. Moving the needle on a compass
A soccer ball that was kicked eventually slows down and stops moving. What force causes the soccer ball to eventually stop moving?
friction
Is gravity a contact or non-contact force?
Non-contact force
An object at rest will stay at rest until......
An outside force acts upon it.
What is an independent variable?
The part of the experiment that you CHOOSE to change.
When will magnets attract to each other?
When opposite poles are facing each other. (S and N or N and S)
Lubricants are liquids that help machines run smoothly by reducing friction. What is 1 example of a lubricant we learned about?
Oil or grease
What keeps our planet rotating around the sun?
The gravitational pull from the sun
If a force is applied in the same direction an object is moving, then the object will...
A) speed up
B) slow down
A) Speed up
Define herbivore, omnivore, and a carnivore.
Herbivore: An animal that only eats plants
Omnivore: An animal that eats plants and animals
Carnivore: An animal that only eats animals