Bio
This is the basic unit of life in all living things.
What is a cell
The force that pulls objects toward Earth.
What is gravity
The basic unit of matter that makes up all substances.
What is an atom
The value of x if 4x – 12 = 0.
What is x = 3
The layer of Earth made of solid rock beneath the crust.
What is the mantle
This green part of a plant cell makes food using sunlight.
What is a chloroplast
The unit used to measure force.
What is a newton
The particle made of protons and neutrons at the center of an atom.
What is the nucleus
The value of 2³ × 5².
What is 200
The phase of the Moon when it appears completely dark from Earth.
What is a new moon
These are groups of similar cells working together to do one job.
What is a tissue
The formula that relates speed, distance, and time.
What is speed = distance ÷ time
This type of bond forms when atoms share electrons.
What is a covalent bond
The probability of drawing a red card from a standard deck of 52.
What is 26/52 or 1/2
The boundary where two tectonic plates meet and earthquakes often occur.
What is a fault line
This process moves water across a cell membrane from high to low concentration.
What is osmosis
The energy an object has because of its motion.
What is kinetic energy
This gas makes up about 78% of Earth’s atmosphere.
What is nitrogen
Solve for x: x² – 16 = 0.
What is x = 4 or x = –4
The planet with the fastest rotation, completing a day in about 10 hours.
What is Jupiter
In this stage of mitosis, chromosomes line up in the middle of the cell.
What is metaphase
For every action, there is an equal and opposite reaction
What is Newton’s third law of motion
This law states that matter cannot be created or destroyed in a chemical reaction.
What is the law of conservation of mass
The remainder when 2,345 is divided by 9.
What is 4
The point in Earth’s orbit when it is farthest from the Sun.
What is aphelion