Show:
forces
magnets
patterns of motion
engineering
miscellaneous
100
This force pulls everything toward the center of the Earth.
gravity
100
When magnets pull toward each other, they _____________.
attract
100
What makes a cup roll in a curve instead of straight?
When there is a large circle/wheel on one end and a small circle/wheel on the other end.
100
The ________________ is the standard unit of measurement for measuring length in the metric system.
meter
100
A scientist that solves problems by creating new inventions or improves them is an ________________.
engineer
200
Applying a push or pull to an object always causes a change of __________.
motion
200
When magnets push away from each other, they _________.
repel
200
What forces cause a twirly bird's motion?
gravity, air, friction
200
1 meter equals ____________ centimeters.
100
200
200 centimeters equals ____________ meters.
2
300
_________________ forces will not cause motion.
Balanced
300
The farther apart two magnets are, the __________________ the force. a) weaker b) stronger
weaker
300
When something turns or spins, like a top, it is called ____________________.
rotate
300
What are the important features of a cart to make it roll freely from here to there?
wheels, axle/shaft, bearing
300
If you put two of the same sized wheels on a cart, the cart will roll ______________.
straight
400
_________________ forces will cause motion.
unbalanced
400
How are magnetism and gravity the same?
They are both forces.
400
If I want a twirly bird to spin faster, I would _______________.
make the wings shorter or add more weight like a paper clip
400
Hw does the start position of a cart affect how far it rolls?
The higher you start the cart, the farther it travels.
400
Possible solutions to a problem are limited by available materials and time. These are called ______________.
constraints
500
This force will slow down or stop a moving object.
friction
500
The area of invisible force that extends around a magnet is called ______________________________.
magnetic field
500
Something that is changed in a system that might affect the outcome of an experiment is called a ____________.
variable
500
A part in a machine that supports or guides a rotating part is called a ________________.
bearing
500
A _________________ system is used to compare to other systems when we change different variables.
standard