Biology
The basic unit of life
What is a cell?
A push, pull or twist
What is force?
The smallest part of an element
What is an atom?
Shaking from tectonic movement
What is an earthquake?
The closest star to Earth
What is the sun?
This process is how plants make their own food
What is photosynthesis?
This force pulls objects towards massive objects
What is gravity?
This molecule is made of 2 hydrogen atoms and one oxygen atom
What is water?
What is the crust?
This is the largest human organ
What is the skin?
This outer structure gives plant cells their rigid shape
What is the cell wall?
This force opposes motion when two surfaces rub together
What is friction?
Two or more elements that are chemically joined
What is a compound?
This type of rock is formed from cooled magma
What are igneous rocks?
This gase makes up most of Earth's atmosphere
What is nitrogen?
This system sends electrical messages around the body
What is the nervous system?
This type of energy is stored in food
What is chemical energy?
Substances on the left side of a chemical equation
What are reactants?
This celestial body causes tides on Earth
What is the moon?
The galaxy that Earth is part of
What is the Milky Way
The process where animals break down food to release energy
What is respiration
The bending of light when it passes from one medium to another
What is refraction?
This type of reaction releases heat into the surroundings
What is an exothermic reaction?
This supercontinent existed millions of years ago before splitting into different continents
What is Pangaea?
This is the only metal that is liquid at room temperature
What is mercury?