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Science
California Science
Grade 4
e-Glossary
P
List of Words for Letter 'P'
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parallel circuit
a circuit in which the electrical current follows more than one path
photosynthesis
the process by which plants turn sunlight into food
physical weathering
the processes that change the size and shape of rocks without changing them chemically
pistil
the parts of a plant that produce the female sex cells
plain
a large, flat stretch of land
plate
an extremely large, moving slab of rock that forms Earth's crust
pole
the part of a magnet where the magnetic force is strongest
pollen
the powder-like grains in a flower that contain the male sex cells
pollination
the process in which the male and female cells of plants come together
population
all the members of a single type of living thing in an environment
predator
an animal that hunts another animal for food
predict
to state likely results of an event or experiment
pressure
a squeezing force that pushes things together
prey
an animal that is hunted by another animal for food
primary consumer
the first consumer in a food chain
producer
an organism that makes its own food
protist
a microorganism that lives in water