Forces
What is a push or pull?
A push or pull is a force that can make an object move, stop, or change direction.
What does motion mean?
Motion is when an object changes its position over time.
What is a cause-and-effect relationship?
A cause-and-effect relationship shows how one event (the cause) leads to another event (the effect).
What is a descriptive investigation?
A descriptive investigation is a way to observe and describe what happens during an experiment.
What force is acting on a moving cart?
The force acting on a moving cart is the push applied to it, as well as friction opposing its motion.
Give an example of changing position.
A car driving down the road is an example of changing position.
What happens when you push a cart?
When you push a cart, it moves in the direction of the push.
Why do we collect observations?
We collect observations to gather evidence and understand the results of our experiments.
How do magnets affect objects?
Magnets can attract or repel objects made of certain metals, like steel.
What is a static force?
A static force is a force that does not cause movement, like a rock sitting on the ground.
How does gravity affect motion?
Gravity pulls objects toward the Earth, affecting their motion, such as making them fall.
What is the purpose of an experiment?
The purpose of an experiment is to test a hypothesis and learn about cause-and-effect relationships.
What is the effect of friction?
Friction slows down or stops the motion of an object.
How do we describe speed?
Speed is described as the distance traveled over time.
What causes a ball to roll?
A push or pull causes a ball to roll.
How do you evaluate a design?
You evaluate a design by testing it and analyzing the results to see if it meets the objectives.
How do forces change motion?
Forces can cause an object to start moving, stop moving, or change its direction.
How do objects change direction?
Objects change direction when a force acts on them, such as turning the steering wheel of a car.
Describe the effect of increasing force.
Increasing force can increase the speed or distance an object moves.
How do we test a hypothesis?
We test a hypothesis by conducting experiments and collecting data to see if the hypothesis is supported or not.