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Science
California Science
Grade 5
e-Glossary
H
List of Words for Letter ‘H’
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halogen
an element in the most reactive family of nonmetals
hardness
how well a mineral resists scratching or a metal resists denting
heart
the muscular organ that pumps blood throughout the body
heterogeneous
made up of things that differ in kind and/or nature
high pressure system
a large mass of air with high atmospheric pressure at the center
homogenous
made up of things that either look the same or are the same
humidity
the amount of water vapor in the air
hurricane
a very large, swirling storm with very low pressure at its center and wind speeds higher than 73 miles per hour
hydrocarbon
a compound made only of hydrogen and carbon atoms
hypothesis
a testable statement about what someone thinks is logically true