Motion
What is it called when an object changes its position?
Motion
What is a force?
A push or a pull
What force can attract or repel certain objects without touching them?
Magnetic force.
What must electricity have in order to travel through a simple circuit?
A complete or closed path.
A toy car travels 5 feet in 2 seconds. What could you measure to describe its motion?
The distance it travels and the amount of time it takes.
A student pushes a toy car. Is the student using a push or a pull?
A push.
Which object would most likely be attracted to a magnet: a plastic spoon, wooden pencil, or iron paper clip?
The iron paper clip
Which is a good conductor of electricity: rubber, plastic, or copper?
Copper.
A student rolls a ball three times. Each time, it travels about the same distance. What does this show?
A pattern in the ball's motion.
What will usually happen if you push a toy car harder?
The car will move faster or farther.
What happens when two north poles of magnets are placed near each other?
They repel, or push away from each other.
What happens when an electrical circuit is open?
Electricity cannot complete its path and flow through the circuit.
If a toy car follows the same motion pattern during several trials, what can scientists use that pattern to do?
Predict how the car will move in the future.
Two students push the same box in opposite directions. What could happen if one student pushes harder?
The box will move in the direction of the stronger push.
A magnet pulls a paper clip toward it even though they are not touching. What does this tell us about magnetic forces?
Magnetic forces can act at a distance.
Why are electrical wires often made with copper on the inside and plastic or rubber on the outside?
Copper conducts electricity, while plastic or rubber helps protect people from the electric current.