Ecosystems
What is a habitat?
A place where an animal or plant lives.
What causes day and night?
Earth spinning (rotating) on its axis
Name the 3 states of matter.
Solid, liquid, gas.
What is gravity?
A force that pulls objects toward Earth.
Name one form of energy.
Light, sound, heat, electrical, mechanical.
Name one producer and one consumer.
Producer: plant.
Consumer: animal (like a deer, lion, human).
How long does Earth take to orbit the sun?
One year (about 365 days).
What is evaporation?
When a liquid changes into a gas.
What is friction?
A force that slows things down when they rub together.
What is potential energy?
Stored energy.
What is the purpose of decomposers?
They break down dead things and return nutrients to the soil.
Name one phase of the moon.
New moon, full moon, crescent, gibbous, quarter.
Difference between mass and volume?
Mass = how much matter something has.
Volume = how much space it takes up.
What tool measures speed?
A stopwatch or speedometer.
What is kinetic energy?
Energy of motion.
Define “food chain.”
A sequence that shows how energy moves from one organism to another.
What causes the seasons?
Earth’s tilt as it orbits the sun.
Is melting reversible or irreversible?
Reversible (it can freeze again).
Give an example of a push and a pull.
Push: closing a door.
Pull: opening a drawer.
Give an example of sound energy.
A drum, clapping, someone talking.
What happens to a food web if a species disappears?
Other populations can increase or decrease because the balance changes.
What is a constellation?
A group of stars that forms a pattern.
What is a physical change?
A change in size, shape, or state that does NOT make a new substance.
What force makes a ball roll slower over time?
Friction.
What energy does the sun give us?
Light and heat energy.