Chemistry
This molecule’s chemical formula is H2O.
Water
These entities, which cause Covid-19 as well as other diseases, aren’t alive and can’t reproduce outside of a host cell.
Viruses
This force pulls objects with mass towards each other, and it causes objects to stay on the Earth’s surface instead of floating into space.
Gravity
The asteroid belt runs between these two planets.
Mars and Jupiter
This gas makes up the majority (78%) of Earth’s atmosphere.
Nitrogen
This is the process that plants use to convert sunlight to energy.
Photosynthesis
This law states that “every action has an equal and opposite reaction.”
Newton's 3rd law of motion
This layer of solid, but very hot, rock lies between Earth’s crust and outer core.
Mantle
What are the two types of particles in the nucleus of an atom?
Protons and neutrons
This molecule with a double helix structure contains genetic information.
DNA
What are the three main classes of rocks?
Igneous, sedimentary, metamorphic
This is the term for an atom which has lost or gained an electron, which gives it a positive or negative charge.
Ion
These organs contain alveoli that add oxygen to and remove carbon dioxide from the blood.
Lungs
This planet has a rotating hexagon-shaped storm at its north pole.
Saturn
This group of elements rarely reacts or bonds with other elements because their outer electron shell is full.
Noble gases (or group 18)
These molecules combine to form proteins. There are 21 of them.
Amino acids
This belt just outside of Neptune’s orbit contains Pluto, as well as other dwarf planets and many smaller frozen objects.
Kuiper belt