Earth Science
Space Exploration
Human Body
Forces and Energy
Ecosystems and Environments
100

What are the three main types of rocks?

What are igneous, sedimentary, and metamorphic?

100

What is the smallest planet in the solar system?

What is Mercury?

100

What organ pumps blood throughout the body?

What is the heart?

100

What force pulls objects toward the Earth?

What is gravity?

100

What is the process where plants use sunlight to make food?

What is photosynthesis?

200

What is the process by which water evaporates, condenses into clouds, and falls back to Earth as precipitation?

What is the water cycle?

200

What do we call a group of stars that forms a pattern in the sky?

What is a constellation?

200

What system in the body includes the brain and spinal cord?

What is the nervous system?

200

What is the name of the energy we get from the Sun?

What is solar energy?

200

What is the name for animals that eat both plants and other animals?

What are omnivores?

300

What do we call the part of the Earth's crust that moves and causes earthquakes?

What are tectonic plates?

300

Which planet is known as the “Gas Giant” and has the largest number of moons?

What is Jupiter?

300

What do we call the bones in your chest that protect your heart and lungs?

What are ribs?

300

What is the term for materials that do not allow electricity to flow through them?

What are insulators?

300

What do we call the place where an animal lives?

What is a habitat?

400

What is the name of the scale used to measure the strength of an earthquake?

What is the Richter scale?

400

What is the term for the force that keeps planets in orbit around the Sun?

What is gravity?

400

What is the name of the cells that carry oxygen in your blood?

What are red blood cells?

400

What do we call a simple machine that uses a wheel and rope to lift objects?

What is a pulley?

400

What is the term for the path energy takes from plants to animals in nature?

What is a food chain?

500

What is the most common gas in Earth’s atmosphere?

What is nitrogen?

500

What is the name of the first satellite sent into space by humans?

What is Sputnik 1?

500

What is the name of the process where your body breaks down food into energy?

What is digestion?

500

What is the term for the energy an object has because it is moving?

What is kinetic energy?

500

What do we call species that no longer exist?

What is extinct?

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