TYPES OF FORCES
What force pulls objects toward the Earth?
Gravity
What force slows down moving objects when they touch surfaces?
Friction
What are the two poles of a magnet?
North and South
What causes day and night?
Earth’s rotation
What is an adaptation?
A feature that helps living things survive
What force pushes up on an object resting on a surface?
Normal force
What type of resistance slows objects moving through air?
Air resistance
What happens when two like poles meet?
They repel (push away)
What movement of the Earth causes seasons?
Revolution around the Sun
What do animals do in winter to sleep and save energy?
Hibernate
What do we call a force applied by a person (push or pull)?
Applied force
Why does a parachute fall slowly?
It increases air resistance (drag)
Give one example of a magnetic material.
Iron/cobalt/nickel
Why do seasons happen?
Because Earth is tilted on its axis
Why do some animals migrate?
To find food or warmer places
What tool is used to measure force?
Forcemeter
What shape reduces air or water resistance?
Streamlined shape
What is the invisible area around a magnet called?
Magnetic field
What do we call the imaginary line Earth spins on?
Axis
Give one adaptation of animals in cold environments.
Thick fur / fat / blubber
If you push a box harder, what happens to the force?
The force increases
Name one factor that increases friction.
Rough surface / more weight / larger contact area
What is the difference between a magnet and a magnetic material?
A magnet creates a magnetic field; a magnetic material is attracted to magnets
When it is summer in Vietnam (Northern Hemisphere), what season is it in the Southern Hemisphere?
Winter
What is camouflage?
Blending into the environment to hide