Physics
What is the force that pulls objects toward Earth.
Gravity
Atom
This organelle is known as the "powerhouse of the cell" because it produces most of the cells' energy form in the form of ATP
Mitochondrion
The layer of gases that surround the Earth
Atmosphere
The star at the center of our Solar System
The sun
The measure of how fast an object is moving
Speed
This is a pure substance made of two or more elements clinically combined
Compound
DNA
The supercontinent that existed about 300 million years ago
Pangaea
The planet known as the Red Planet
Mars
This law states that for every action, there is an equal and opposite reaction
Newton's third law of motion
These are substances that speed up a chemical reaction without being used up.
Catalysts
The observable traits of an organism, like eye colour or height
Phenotype
The process by which rocks are broken down by wind, water or ice
Weathering
This force keeps planets in orbit around the Sun
Gravity
Energy stored in an object due to its position or shape is called..
Potential energy
This type of bond forms when atoms share electrons
Covalent bond
Body parts that no longer serve a purpose, like the human tailbone
Vestigial structures
The point on Earth's surface directly above an earthquake's focus
Epicenter
This term describes a rock from space that burns up in Earth's atmosphere
Meteor
This type of energy depends on an object's motion or mass
Kinetic energy
This law states that mass is neither created nor destroyed in a chemical reaction.
The law conservation of mass
The protein in red blood cells responsible for carrying oxygen
Hemoglobin
The boundary where two tectonic plates slide past each other
Transform boundary
This point in an orbit is when a planet or object is closest to the Sun
Perihelion