Tropos
Metron
Tele
Photos
Graph
100

The area of earth from the equator north to the tropic of cancer and south to the tropic of capicorn

what is the tropics

100

measuring earth

what is geometry

100

sound from far away

what is telephone

100

picture drawn by light

what is photograph

100

pictured information

what is a graph

200

turning toward heat 

what is thermotropism

200

measuring eyesight

what is optometry

200

device for looking at things far away

what is a telescope

200

a device that measures light

what is a photometer

200

turning toward light

what is phototropic

300

plants that love change of seasons

what is tropophilous

300

device to measure air pressure

what is a barometer

300

a fundraiser that goes on and on

what is a telethon

300

process of putting things together using light

what is photosynthesis

300

to write ones own name

what is an autograph

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