Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

first semester voc

7th grade science first semester voc

gravitropism the growth response of plants to gravity
positive phototropism when plants bend towards the light
positive gravitropism when plant grow in the direction gravity pulls it
thigmotropism a plant's growth response to touch is called
solar tracking when flowers are a tracked to the sun
tropism a growth response of a plant toward or away from something in its environment
phototropism the growth response of plant to light
producer / autotroph make their food/energy, using sunlight, carbon dioxide, and water.
consumer/ heterotroph eats others organisms as a source of food/energy
detritovore feeds on dead matter ex. shrimp and vultures
decomposer feeds on dead matter and recyles it back into the ecosystem ex. fungi
biodiversity All of the different living organisms within an ecosytem
omnivore eats both plants and animals, ex. racoon
biotic living
abiotic non living
immigration organisms are coming into the environment
emmigration organisms are leaving the environment
community all living organims within an ecosystem
ecosytem all living organims and non living factors within the environment
population a group on individuals from the same species livng together
niche the physical and biological area where an organism lives . It's "click" or "spot"
carrying capacity the maximum population size an environment can sustain.
non-native species a species that is not orginal to the environment, disrupts the food web.
photosynthesis process by which plants use sunlight water and carbon dioxide to create a oxygen and glucose (sugar) and water vapor
carbon dioxde gas is used by plants during photosynthesis
leaf in which part of the plant where most of the photosynthesis process takes place
oxygen which gas is released by plants during photosynthsis
chlorophyll the chemical pigment found in the chloroplast that makes the leaves of plants green in color
transpiration the moment of water vapor out of a plant and into the air
sunlight radiant energy that starts the process of photosynthesis turning radiant energy into chemical energy
phototropism the way a plant grows or moves in response of light [bends near light]
Tornado a mobile destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system
Hurricane a hurricane is an intense tropical storm with powerful winds and heavy rain.
Flood a great flowing or overflowing of water, especially over land not usually submerged.
Earthquake a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earths crust or volcanic action.
Tsunami a long high sea wave caused by an earthquake, submarine landslide, or other event.
Biological weathering breaking down of rocks by activities of living organisms. (digging or roots.)
Catastrophic event a violent, usually destructive natural occurrence
Chemical Weathering breaking down of rocks by chemical processes by changes.
Deposition a process weathered and eroded materials are deposited by wind or water or ice.
Erosion weathered material is moved by wind, water, and ice.
Physical (mechanical) Weathering breaking rocks (physical pressure grinding shattering)
Weathering process which exposed rock are broken down. May be caused by wind water physical chemical and biological.
Drainage Divide A geographical barrier, such as a ridge, hill, or mountain, separating one watershed land area from another
Surface Water Water from precipitation that drains into a gully that !ows into a stream, which in turn !ows into a river, lake, reservoir, estuary, wetland, or the ocean
Groundwater Water that collects in cracks and pores in underground soil and rock layers
Water Table The top of the saturation zone, below which water "lls all open spaces between the rock
Zone of Aeration The upper portion of soil and rock that can be temporarily "lled with water as the water enters the ground, but then moves deeper
Saturation Zone Below the water table where all spaces not "lled with solid material "ll with water
Aquifer A layer of permeable rock that allows water to !ow through
Permeable Rock Allows water movement to !ow through the material, the opposite of impermeable
Point-Source Water Pollution A single identi"able and localized source of water pollution, such as wastewater discharge into a stream
Non-Point Source Water Pollution Pollutants introduced into surface or ground water that are without a speci"c location source, such as water !owing over a lawn that has been fertilized and into a drain
Sediments Earth material that is broken down by processes of weathering, can be eroded and deposited by the agents of water, wind, ice, and gravity
Ecoregion A relatively large area that is characterized by distinctive plant and animal communities, climate, and ecological features
Compost Bin A container for piles of biomass to promote decomposition and decay resulting in a recyclable fertilizer
Carbon Cycle The movement of carbon from the nonliving environment into living things and back
Nitrogen Cycle The movement of nitrogen from the nonliving environment into living things and back
Water Cycle The movement of water through the atmosphere, the ground, bodies of water, and living things; the continuous movement of water above, on, and below Earth’s surface
Sustainable Capable of being maintained at a steady level without exhausting natural resources or causing severe ecological damage
Climax Community A relatively stable state of succession, or the end product of succession
Zero-gravity The complete absence of gravity that can only be found in space
Vacuum A volume of space mostly empty of matter, such as oxygen to breathe!
Spacesuit A complex system of garments that allow astronauts to work safely outside their spacecraft
Water A requirement for life as we know it; exists on Earth as a solid, liquid, and gas
Homeostasis The tendency of an organism or cell to maintain a balanced state so as to maintain health and functioning
Stimulus An action or condition that provokes a response
Response Any behavior of a living organism that results from an external or internal stimulus
Thermal Energy Energy that is generated by the organism when work is done and used by the organism to maintain a constant temperature
Mechanical Energy Energy used by the organism to do work
Transformation of Energy A change in the form of energy in a system
Chemical Energy Energy stored within the bonds between atoms and molecules and is obtained from a chemical reaction or change ex.. glucose
Work The use of force to move an object through a distance W=Fd
Mass The amount of matter in an object or substance
Distance Measurement from one place to another
Friction Force that opposes the sliding motion between two touching surfaces
Simple Machines Devices that reduce the amount of force needed, but do not reduce the amount of work being done
Inclined Plane (Ramp) A simple machine that is sloping at a particular angle
Force A push or pull that changes the motion or position of an object
Net Force The sum of all the forces acting on an object
Motion A change in an object’s position, direction, or location
Turgor Pressure Pressure of water molecules against the cell wall that allows plants to stand up straight
Succession Natural, gradual changes in the types of species that live in an area; can be primary or secondary
Primary Succession Begins in a place without any soil (Sides of volcanoes, Landslides, Flooding)
PIONEER SPECIES the first species to arrive
Secondary Succession Begins in a place that already has soil and was once the home of living organisms. Occurs faster and has different pioneer species than primary succession Example: after forest fires
Created by: KallyEvans