Greek Roots chron, meter, photo, bio, geo, logy

Photosynthesis

Conversion of light energy from the sun into chemical energy.

thermometer

An instrument used to measure temperature

Geography

Study of the earth

chronograph

a device to measure and record time

chronological

arranged in order of time

centimeter

one hundredth of a meter

photograph

picture drawn by light

geometric

political boundary defined and delimited as a straight line or an arc

astrology

study of the stars

Biosphere

the part of Earth where life exists

Biology

the scientific study of life

zoology

the study of animals