Grade 3
Everything surrounding living things.
Environment
Reptiles that went extinct a long time ago
Dinosaur
A chunk of rock in space that orbits the sun
asteroid
The movement of an object around another object.
revolution
An area in a tornado where air spins very fast in circles
Vortex
The way in which a living thing acts
Behavior
The amount of space an object takes up
volume
A giant wave usually caused by an earthquake beneath the ocean floor.
Tsunami
Strong winds with lightning, thunder, and heavy rain.
Thunderstorm
It helps living things match with their surroundings, so they can hide from their enemies
Camouflage
The idea that everything is made of small particles
Atomic theory
A liquid’s resistance to flowing.
viscosity
How far north or south a place is from the equator.
Latitude
The change in state from a gas to a liquid.
Condensation
A process in which a new kind of matter forms
Chemical change
The change in state from a solid directly to a gas without passing through the liquid state.
Sublimation
Waste that harms the ecosystem.
Pollution
To reduce body activities during the winter
Hibernate
The green substance in plant cells that absorbs light energy and helps the plant perform photosynthesis.
Chlorophyll
A vertebrate whose body temperature is regulated by its internal heat and that has skin covered with hair or fur and glands that produce milk to feed its young.
Mammal
The electric charges that build up on an object.
Static electricity
All living things and nonliving things that interact in an environment
Ecosystem
An organism that is too small to see
Microbe
A line that forms the boundary between the land and the ocean or a lake.
Coastline
A non-contact force that pulls an object toward another one.
Gravity
A long period of a heavy rainfall or melting snow, causing river or oceans to overflow their banks
Flood
A type of matter made of two or more elements
Compound
An organism that provides a source of energy or a suitable environment for a parasite to live with, in, or on.
Host
Things used to evaluate if a design is successful or not.
Criteria
The atmospheric conditions in a certain place over many years
Climate
An animal that depends on its environment to warm its body
Ectotherm
A group of similar organisms that can mate with each other and produce offspring that canals mate and reproduce.
Species
Is a type of fossil that represents the space and shape of the outside of organism in rock.
Mold fossil
A continuous signal that sends information.
Analog
Natural substances made up of one or more minerals.
Rocks
A tiny, nonliving particle that enters and then reproduces inside a living cell.
virus
Is land that is mostly frozen the entire year.
Tundra
The top point of a transverse wave.
Crest
Naturally occurring, nonliving solids in earth’s crust
Minerals
The type of weathering in which rock is physically broken into smaller pieces.
Physical or Mechanical weathering
Covers the seed, it is a hard covering that protects the seed.
Seed coat
A long, dry period of weather with little or no rain.
Drought
Group of stars that, when seen, make a shape or picture
Constellation
The chemical processes animals use to break down or build molecules
Metabolism
Means to say what you think might happen in the future.
Predicting
A massive amount of snow, ice, and rocks suddenly sliding down a slope.
Avalanche
Small openings on the surface of the plant.
Stomata
The movement of water and sediment down a beach caused by waves coming in to shore at an angle.
Longshore drift