Chapter 12 Vocabulary

telephone — sound from far away

microphone — makes sound louder

A microphone helps your voice sound louder.

photograph — picture made with light

photosynthesis — plants use light to make food

Plants need light to make their food.

plateau — flat land high up

plane — flat surface

A plateau is flat land on top of a mountain.

cytoplasm — jelly inside a cell

plasma — part of blood

Cytoplasm helps hold parts of a cell together.

pneumonia — sickness in the lungs

pneumatic — powered by air

Your lungs use air to help you breathe.

pedal — something you push with your foot

pedestrian — person walking

You use your foot to push a bike pedal.

tripod — three-footed stand

octopus — animal with eight feet

A tripod has three legs to hold something up.

pediatrician — doctor for kids

pedagogy — teaching children

A pediatrician helps keep children healthy.