Wheels, axles, and Carts
A wheel needs an _________ to rotate.
axel
What force makes the top stop spinning?
What is Friction?
What is Gravity
What happens when a north pole meets a south pole of a magnet?
They attract.
If Mila pulls on a rope with 25 pounds of force and Connor pulls the other end of the rope with 25 pounds of force, are the forces balanced or unbalanced?
Balanced.
We pushed our carts down a ________ to see how far they would go.
Ramp
Which surface would likely have LESS friction: The carpet or a desk?
The Desk
What did we use to add weight to our twirly-birds?
A Paper Clip
When a magnet pulls another magnet, it is called _________.
What is Attraction
An apple sitting on a table has balanced forces or unbalanced forces?
Balanced
A wheel-and-axle system has a big wheel on one side and a small wheel on the other. What will its motion be if it is rolled down a ramp?
Two tops are spun with the same force on the same surface. The tops weigh the same, but one top is wider than the other. Which top will likely spin the longest?
The wider top
Gravity pulling down, air pushing up on the wings
What happens if the south poles of two magnets are facing each other?
They will repel (push away from each other)
A scholar holds a twirly bird up high and lets go. The twirly bird spins as it falls. Are the forces on the twirly bird balanced or unbalanced?
Unbalanced
A scholar is holding their cart steady at the top of a ramp. What are the forces on the cart?
Gravity pulling down, the ramp pushing up and sideways, and the scholar's hand holding the cart back from rolling.
Two tops are spun with the same force on the same surface. One top is heavier than the other. Which top will likely spin the longest?
The heavier top
If a scholar adds weight to their twirly bird, how will it affect the way the twirly bird flies?
It will fall faster
If you add more magnets, the magnetic force will get ___.
Stronger
A book is sitting on a table and not moving. Name all the forces acting on the book.
Gravity pulling down, the table pushing up
Name three variables that could change how far a toy car travels after rolling down a ramp.
Possible answers: the weight of the car, the shape of the car, the steepness of the ramp, the length of the ramp, and the surface it is rolling on.
Name three variables that could affect how long a top spins.
Possible answers include: weight of the body, width of the body, height of the body on the shaft, the surface it is spun on, and the amount of force used to spin it.
It will fall faster
A magnet is "floating" above another magnet on a pencil. Name all of the forces acting on the floating magnet.
Gravity pulling down, the other magnet pushing up (repelling).
Name three changes of motion that could happen to an object.
Possible answers include starting to move, speeding up, slowing down, stopping, and turning or changing direction