7th Grade
Semester Review
Vocabulary
 Biome- An ecosystem with similar climate and organisms.
 Abiotic- Non-living factors in an ecosystem (ex. Water, soil, and climate)
 Biotic- living organisms to begin the succession process.
 Pioneer Species- Fist organisms in an ecosystem (ex. Trees, animals, and plants)
 Climax Community- Last stage of ecological succession.
 Surface Water- water found above ground (ex. Lakes, rivers, ponds, and streams)
 Aquifer- water found and stored underground.
Biomes (Know temperature ranges, plant life, and animal life for each biome)
 Tundra
 Taiga
 Desert
 Savanna
 Temperate Forest
 Tropical Rain Forest
 Coniferous
 Grasslands
Ecological Succession (Give examples of each)
 Primary Succession- Ecological development in a brand new area.
 Secondary Succession- Ecological development in an area for a second time.
 Pioneer Species- First organisms to begin the succession process.
 Climax Community- Last stage of ecological succession.
Space
 Newton’s Third Law of Motion- (Action-Reaction Forces) for every action, there is an
equal/opposite reaction.
 Rockets- Use action/reaction forces to launch equipment into space.
 Space Shuttles- Manned spacecraft, reusable, lightweight, and heat resistant.
 Space Probes- Unmanned spacecraft such as satellites, and Hubble Telescope.
 Space Station- Space Hotel for astronauts (ex. Skylab, ISS)
Organisms in the Environment
 Producers- organisms that produce their own food. (ex. Plants and fungi)
 Consumers – organisms that eat producers (ex. Humans and animals)
 Decomposers- organisms that break down other organisms.
 Composting- creates useful additives for soil.
 Organic Compounds- Compounds made up of carbon.
Energy Transfer
 Physical Changes- changing a substance then being able to change it back.
 Chemical Changes- changing a substance that cannot return to its original form.
 Photosynthesis- Taking energy from the sun and turning it into chemical energy.
Biomes
 What type of climate would you find needle-like leaves in? (Taiga/Tundra) very cold and
frozen.
 What type of climate would you find broad leaves in? (Tropical Rainforest) warm and humid.
 What type of climate would you find cactus in? (Desert) hot and dry.
 What type of adaptations would an animal exhibit in a Desert biome? Plants/animals that
require little
 What type of adaptations would an animal exhibit in a Tundra biome? Quick developing fat
layer What type of adaptations would an animal exhibit in a Marsh biome? Birds with long legs
and Beak.
Ecological Succession
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Draw an example of Primary Succession.
Draw an example of Secondary Succession.
Draw an example of Climax Community.
Give examples of a Pioneer Species.
Space
 List some characteristics of the insulation in space shuttles and space suits. Lightweight/heat
resistant.
 List different types of spacecraft that support human living conditions in space. Space
exploration, Shuttle, Rockets.
 List different types of spacecraft that do NOT support human living conditions. Hubble
Telescope.
 Describe the theory that allows scientists to launch rockets into space. Action- Reaction
Forces.
 List some Pros and Cons of the space shuttle. Pros- lightweight, reusable, heat resistant.
Cons- Fuel.
 If you weight 132 lbs. on earth, what would you weigh on the moon? 132/6 = 22 lbs.
 Name the first space station put into orbit. Skylab
Organisms in the Environment
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Why are plants able to maintain an upright position? Turgor Pressure
List some products of photosynthesis. Chemical energy (Oz, glucose)
Which compound is found in all organic compounds? Carbon
What does breaking down molecules mean? Changing large molecules into many smaller
molecules.
Impacts on the Environment
 What positive effect might come from a rainstorm, flood, or hurricane? Increased
sediments, washed away habitats, enriched soil.
 The loss of vegetation will most likely cause an increase in what catastrophic event?
Flooding.
 List three things that a major volcanic eruption might affect. Climate, sunlight, acid rain.
 How might extra rain from a hurricane affect sediments in the Gulf of Mexico? Increase
sediments in Gulf.
 Give three examples of surface water. Rivers, lakes, streams.
 What is a long term effect of flooding? Increased sediments, enriched soil.
Work
 What is the formula for work? W= fxd
 How much work is done if a 5N box is moved 10m? 50 joules = 5N x 10m
 How much work is done if a 12N box is moved 6 m? 72 joules = 12M x 6m