Science Vocabulary

What is a chemical reaction?

• A process that leads to the transformation of one set of chemical substances to another.

• A method of separating mixtures into their individual components.

• A technique used to measure the pH of a solution.

• A way to combine different elements without changing their properties.

What is a cell?

• A small room in a prison or a monastery.

• The basic unit of life that makes up all living organisms.

• A type of computer memory.

• A unit of measurement for energy.

What is an atom?

• A large particle that makes up molecules.

• The smallest unit of a chemical element, consisting of protons, neutrons, and electrons.

• A type of chemical bond between two elements.

• A collection of different elements combined together.

What is the difference between a solid, liquid, and gas?

• Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither definite shape nor volume.

• Solids can flow, liquids have a definite shape, and gases have a definite volume.

• Solids are compressible, liquids have a fixed shape, and gases have a definite volume.

• Solids have no shape, liquids have a definite shape, and gases have a definite volume.

What is the function of the heart?

• To pump blood throughout the body, supplying oxygen and nutrients.

• To filter toxins from the blood.

• To produce hormones that regulate metabolism.

• To store blood for emergencies.

Define biodiversity.

• The total number of species in a given area.

• The variety of life in the world or in a particular habitat or ecosystem.

• The number of individuals of a single species in an ecosystem.

• The genetic variation within a single species.

Define force.

• A push or pull on an object resulting from the object's interaction with another object.

• A measure of the amount of matter in an object.

• The speed at which an object moves in a given direction.

• The energy required to move an object from one place to another.

What is the water cycle?

• The process of water evaporating, condensing, and precipitating back to the Earth.

• The method by which water is filtered and purified.

• The cycle of water being stored in reservoirs and lakes.

• The process of water being used in agriculture and industry.

What is the role of chlorophyll in plants?

• Chlorophyll is a pigment that allows plants to absorb sunlight for photosynthesis.

• Chlorophyll is a nutrient that helps plants grow in the dark.

• Chlorophyll is a type of water that plants need to survive.

• Chlorophyll is a hormone that regulates plant growth.

What is an ecosystem?

• A community of living organisms interacting with their environment.

• A type of biome with similar climate conditions.

• A group of non-living things in a specific area.

• A collection of species that do not interact.