- Have students identify unfamiliar vocabulary words or language. Review the vocabulary in the “Vocab” tab or look up words in a dictionary.
- Discuss what physical processes are, and provide some examples.
- Physical processes are natural changes that take place on or near the Earth’s surface. Physical processes lead to changes in Earth’s atmosphere, biosphere, hydrosphere, or lithosphere.
- Some examples of physical processes are erosion, glaciation, sedimentation, and the effects of tectonic activity, including volcanic eruptions, earthquakes, and tsunamis.
- Have students answer the two questions in the “Questions” tab.
thick glacier covering most of Antarctica.
person who studies the possibility of life in outer space.
organism that can produce its own food and nutrients from chemicals in the atmosphere, usually through photosynthesis or chemosynthesis.
(singular: bacterium) single-celled organisms found in every ecosystem on Earth.
a dip or depression in the surface of the land or ocean floor.
solid rock beneath the Earth's soil and sand.
particular feature of an organism.
process that involves a change in atoms, ions, or molecules of the substances (reagents) involved.
process by which some microbes turn carbon dioxide and water into carbohydrates using energy obtained from inorganic chemical reactions.
substance having at least two chemical elements held together with chemical bonds.
items gathered closely together in one place.
ice sheet that covers an enormous area.
to go from a higher to a lower place.
conditions that surround and influence an organism or community.
to wear away.
moon of Jupiter.
to purposely leave out.
to pull out.
microbe that is adapted to survive in very harsh environments, such as freezing or boiling water.
narrow opening or crack.
mass of ice that moves slowly over land.
study of glaciers and ice sheets.
opening on the seafloor that emits hot, mineral-rich solutions.
type of lake with a very high salt content.
chemical element with the symbol Fe.
to set one thing or organism apart from others.
a prominent feature that guides in navigation or marks a site.
the geographic features of a region.
person who studies lakes and ponds.
tiny organism, usually a bacterium.
study of the structure, function, and behavior of microscopic organisms.
natural satellite of a planet.
water, sediment, and chemicals discharged by a river or other flowing body of water.
chemical process of a substance combining with oxygen to change the substance's physical and molecular structure.
chemical element with the symbol O, whose gas form is 21% of the Earth's atmosphere.
to penetrate or pass through every part of something.
an unusual act or occurrence.
process by which plants turn water, sunlight, and carbon dioxide into water, oxygen, and simple sugars.
large region that is higher than the surrounding area and relatively flat.
single, upward flow of a fluid, such as water or smoke.
pure or unpolluted.
material left over after something has been removed.
to dissolve and form a brittle coating, as iron does when exposed to air and moisture.
end of a glacier.
inland body of fresh water that exists under a glacier or ice cap.
having to do with powers not explained by science or nature.