Term | Definition |
Temperate forest | trees loose leaves, soil fertile |
Coniferous forest | evergreen trees, soil is poor |
Tundra | extreme cold, little percip., permafrost, treeless, low plants & flowers |
Savannas | tropical grasslands, warm, dry |
Temperate grasslands | 4 seasons, extremely fertile soil |
Chaparral | droughts |
Deserts | soils abundant in nutrients |
Aquatic | fresh and ocean water |
Joules | unit of energy and work |
Liters | unit of capacity (liquid, volume) |
Millimeters | measure of length |
Micrometers | measure of distance |
Ohms | unit of electrical resistance |
Watts | Unit of power |
Millivolts | unit of electromotive force |
Reflection | returning of a wave to the medium from which it came when it hits a barrier |
Refraction | the bending of waves due to a change in medium |
Diffraction | the bending of a wave due to it passing through a small opening |
Greenhouse effect | caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface |
Cold front | The cold air forces the warm air upward, where it condenses to form clouds. |
Warm front | The less-dense, warmer air rides up and over the colder, denser air, resulting in widespread cloudiness and light-to-moderate precipitation that can cover great distances. |
chordates | the group that includes humans; eatures: a brain and a spinal cord that runs along the back of the body |
carbon cycle | from atmosphere into organisms |
nitrogen cycle | from atmosphere to the soil |
Endoskeleton | made of small interlocking plates; marine animals with spiny surfaces. This group includes the sea stars, sea urchins, and sea cucumbers |
Mollusks | soft-bodied animals such as clams, oysters, squids, octopuses, snails, and slugs |
chelicerates | include horseshoe crabs, spiders, scorpions, ticks, and mites |
Sponges | are sedentary marine animals |