Back to:
Science
California Science
Grade 4
e-Glossary
C
List of Words for Letter 'C'
Click on
to hear the word and definition
camouflage
an adaptation that allows an animal to blend into its surroundings
canopy
the part of a forest just below the uppermost branches of the tallest trees
canyon
a deep, narrow valley with steep sides
carbon dioxide
a gas in the air
carbonic acid
a weak acid that forms when carbon dioxide reacts with rainwater
carnivore
an animal that eats other animals
cell
the smallest unit of life
chaparral
an area with dense thickets of small shrubs and trees
chemical weathering
the process in which rocks break down due to chemical changes to the minerals
chlorophyll
a material in plants that helps them take in sunlight
cinder-cone volcano
a volcano shaped like a cone
circuit
the path along which electric current flows
circuit breaker
something that switches off a circuit when the current gets too high
classify
to place similar materials together in a group
cleavage
the way a mineral splits or breaks along flat surfaces
climate
the typical weather patterns of a region
closed circuit
a complete, unbroken electrical circuit
communicate
to share information
compass
an instrument that tells direction using Earth's magnetic forces
competition
the struggle among living things for the same resources
composite volcano
a volcano made up of layers of lava and ash
conductor
a material through which heat or electricity flows easily
conglomerate
a substance formed from rocks that have been lumped together
conserve
to save or protect
consumer
an organism that eats plants and other animals
contour plowing
a farming method that cuts into the soil across a hillside rather than up and down the hillside
crater
a cuplike shape in the earth
creep
a slow movement of plates along a fault
crust
the outermost layer of Earth
crystal
the geometric shape a mineral forms when its atoms and molecules are in fixed patterns