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Science
California Science
Grade 6
e-Glossary
T
List of Words for Letter âTâ
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taiga
a cool forest of cone-bearing evergreen trees; also called a boreal forest
taproots
thick, straight roots with a few root hairs along the sides
tectonic plate
a rigid plate that is part of Earth's surface and moves slowly across the mantle
temperature
the average kinetic energy of the molecules in a substance
tertiary consumer
an animal that eats secondary consumers; usually the top predator in a food chain
textile
any type of fabric, especially one made by weaving or knitting fibers together
thermal conductivity
the rate at which a material warms up when absorbing heat
thermal energy
the movement of energy from one substance to another; also called heat
thermal pollution
the release of excess heat from nuclear power plants; can destroy habitats and kill the animals that live in them.
topsoil
the upper layer of soil; composed mostly of humus, minerals, water, and air
trade winds
winds that blow almost continually toward the equator from the northeast to the southwest
transform boundary
a boundary between plates that are sliding past each other
transpiration
the loss of water from plant leaves
transportation
the movement of rock and soil as Earth's surface is eroded
triangulation
a way of using information from at least three seismograph stations to find the location of the epicenter
tritium
one of the two forms of hydrogen used in the process of nuclear fusion
tsunami
a series of huge waves caused by an earthquake or volcanic eruption beneath or near the ocean
tundra
a very cold, dry biome that includes a layer of permanently frozen soil
turbine
an engine that is activated by moving water, steam, wind, or air and used to generate electricity; similar to a waterwheel