Motion
This must be applied to an object to put it in motion.
What is a force?
The force when two objects rub against one another.
What is friction?
Describe gravity.
What is the force that pulls an object towards the center of the Earth?
The N and the S on the ends of a bar magnet mean what?
What is North and South?
The two forces working on the hot wheel cars as they traveled down the track.
What are gravity and friction?
The two basic types of forces.
What is a push and a pull?
Give an example of two surfaces with a high amount of friction.
The scientist who was sitting under an apple tree when an apple fell on his head. He studied why it fell straight down and the force of gravity.
Who is Sir Isaac Newton?
Name 3 objects that are magnetic and 3 objects that are not magnetic.
Answers will vary.
Why putting markers under the teacher's book made the book slide easier than just pushing it on the table.
What is it reduced the force of friction?
What is gravity?
Give an example of three surfaces with a low amount of friction.
What are (any types of smooth surfaces)?
Name one of Isaac Newton's 3 laws of motion.
Every movement or change of movement is a result of a force.
The speed and direction of an object is determined by the force.
3. For every action, there is a reaction
Magnets do not attract all types of metals. What does the metal generally have to contain in order for it to attract to a magnet?
What is iron (cobalt, nickel)?
A reason why farmers feed their cows magnets.
What is the magnet attracts metals that they eat (barbed wire, etc) so it doesn't cut up their stomachs?
The force that slows down or stops an object in motion.
What is friction?
Stops cars, bikes, etc. (many possible answers)
How we measure the pull of gravity on an object.
What is weight or mass?
When North and South poles are faced towards one another, they ______________________.
What is attract?
Three things that affected which hot wheel car traveled down the track the fastest.
What is mass, design, aerodynamics, type of material the car was made out of, wheels, etc?
Newton's 2nd law of motion:
The __________________ and _______________ of an object is determined by its force.
What is speed and direction?
How a hovercraft defies (significantly reduces) friction.
What is it creates a pillow of air between two surfaces and greatly reduces friction?
Describe what would happen to our Earth in orbit without gravity.
When North and North poles are faced towards one another, they _____________________.
What is repel?
Describe 3 different factors that had an effect on how you could use the magnetic property of repelling to get your car across the finish line the quickest.
Answers vary, but include: the car's design, its wheels, the magnet used; the technique you used for getting the magnet to repel, etc.