Card 1
Term
DNA
Definition
The molecule that carries the genetic instructions for life.
Card 2
Term
Atom
Definition
The smallest unit of matter that still has the properties of an element.
Card 3
Term
Gravity
Definition
The force that pulls objects toward each other, especially toward Earth.
Card 4
Term
Evolution
Definition
The process through which species change over time through natural selection.
Card 5
Term
Virus
Definition
A tiny infectious agent that needs a host cell to reproduce.
Card 6
Term
Vaccine
Definition
A substance that trains the immune system to fight a disease.
Card 7
Term
Energy
Definition
The ability to do work or cause change, such as motion, light, or heat.
Card 8
Term
Photosynthesis
Definition
The process plants use to turn sunlight, water, and air into food.
Card 9
Term
Carbon dioxide
Definition
A gas produced by breathing and burning, and used by plants in photosynthesis.
Card 10
Term
Climate change
Definition
Long-term shifts in temperatures and weather patterns on Earth.
Card 11
Term
Cell
Definition
The basic building block of all living organisms.
Card 12
Term
Bacteria
Definition
Tiny single-celled organisms, some helpful and some harmful.
Card 13
Term
Oxygen
Definition
The gas we breathe in to stay alive, essential for most life forms.
Card 14
Term
Element
Definition
A pure substance made of only one kind of atom.
Card 15
Term
Force
Definition
A push or pull that can make something move or stop.
Card 16
Term
Nucleus
Definition
The center of an atom, containing protons and neutrons.
Card 17
Term
Hypothesis
Definition
An educated guess or prediction that can be tested in an experiment.
Card 18
Term
Data
Definition
Facts, numbers, or observations collected to learn or decide something.
Card 19
Term
Theory
Definition
A well-tested explanation for a set of observations or facts.
Card 20
Term
Acid
Definition
A substance with a sour taste that can react with bases and metals.