Question 1

heat, temperature

Accepted Answer

therm

Question 2

water

Accepted Answer

hydro

Question 3

light

Accepted Answer

photo

Question 4

relating to heat

Accepted Answer

thermal

Question 5

An instrument used to measure temperature

Accepted Answer

thermometer

Question 6

a container that keeps liquids hot or cold for long periods of time

Accepted Answer

thermos

Question 7

a device used to control the temperature

Accepted Answer

thermostat

Question 8

high body temperature

Accepted Answer

hyperthermia

Question 9

a gas, simplest chemical element

Accepted Answer

hydrogen

Question 10

an instrument for measuring the density of liquids.

Accepted Answer

hydrometer

Question 11

sliding uncontrollably on a wet surface

Accepted Answer

hydroplane

Question 12

the growing of plants in water

Accepted Answer

hydroponic

Question 13

relating to hot water

Accepted Answer

hydrothermal

Question 14

a particle of light

Accepted Answer

photon

Question 15

a lens for a camera that makes far away objects appear to be closer

Accepted Answer

telephoto

Question 16

relating to or resembling photographs

Accepted Answer

photographic

Question 17

Plants use the sun's energy to convert water and carbon dioxide into sugars

Accepted Answer

photosynthesis

Question 18

A plant's response to light

Accepted Answer

phototropism

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