Earth Science
What causes day and night?
Earth's rotation
What do plants need to grow?
Sunlight, water, air, and soil.
100: What are the three states of matter?
➡️ Solid, liquid, and gas.
100: What planet do we live on?
Earth
100: Why should we recycle?
➡️ To reuse materials and protect Earth.
What causes the seasons?
The Earth’s tilt and orbit around the Sun.
What part of a plant makes food?
➡️ The leaves.
200: What force pulls things down?
➡️ Gravity.
200: What causes the moon to shine?
➡️ It reflects sunlight.
200: What is pollution?
➡️ Harmful substances that dirty air, water, or land.
What is precipitation?
Rain, snow, sleet, or hail falling from the sky.
What is a food chain?
➡️ Shows how energy moves from plants to animals.
300: What is friction?
➡️ A force that slows things when they rub together.
300: Which planet has rings?
➡️ Saturn.
300: What is a renewable resource?
➡️ Something that can be replaced, like trees or sunlight.
What force makes a river flow downhill?
Gravity
400: What is camouflage?
➡️ Colors or patterns that help animals hide.
400: What happens when light hits a mirror?
➡️ It reflects.
400: Why do astronauts float in space?
➡️ There’s very little gravity.
400: What tool measures rain?
➡️ A rain gauge.
What causes an earthquake?
Tectonic plate movement
500: How does a caterpillar become a butterfly?
➡️ Through metamorphosis.
500: What is electricity?
➡️ Energy that flows through wires to power things.
500: What is gravity in space?
➡️ The force that keeps planets in orbit.
500: What is a hypothesis?
➡️ A guess that can be tested.