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Unit 6 Lessons 1-3

Force, energy, work, energy transfer

QuestionAnswer
The use of force to move an object a distance. W = Fd Work
The amount of matter in an object or substance. Mass
Measurement from one place to another. Distance
Force that opposes the sliding motion between two touching surfaces Friction
Devices that reduce the amount of force needed, but do not reduce the amount of work being done. Simple Machines
A simple machine that is sloping at a particular angle. Inclined Plane (Ramp)
Force on an object that does not change the motion of the object. Balanced Forces
A push or pull that changes the motion or position of an object. Force
The sum of all the forces acting on an object. Net Force
A change in an object's position, direction, or location Motion
Pressure of water molecules against the cell wall that allows plants to stand up straight. Turgor Pressure
A plant's growth in response to the force exerted upon them by gravity. Geotropism
Force on an object that cause change in the motion of the object. Unbalanced Forces
A change in the form of energy in a system. Transformation of Energy
Energy used by the organism to do work (energy of motion) Mechanical Energy
Energy generated by the organism when work is done and used by the organism to maintain a constant temperature. Thermal Energy
Energy stored within the bonds between atoms and molecules and is obtained from a chemical reaction or change. Chemical Energy
Solar energy converted to chemical energy by photosynthesis is Chemical Energy
What holds the atoms together in molecules Chemical Bond
The process by which chemical energy contained in the bonds of the food molecules break down and are converted to mechanical and thermal energy is ... Digestion
A chemical reaction during which plants convert energy from the sun to chemical energy. Photosynthesis
Contains organic carbon and possibly oxygen, hydrogen, nitrogen, phosphorus, and/or sulfur Organic Compounds
To break down or decompose Decay
Organisms that breakdown dead organisms. Decomposers
Examples of decomposers Bacteria, fungi, earthworms
A container for piles of biomass to promote decomposition and decay Compost Bin
Material composed living or recently living organic molecules containing hydrogen, carbon, often nitrogen and other atoms Biomass
the movement of nitrogen from the nonliving environment into living things and back Nitrogen Cycle
The movement of carbon from the nonliving environment into living things and back Carbon Cycle
An energy path from one organism to another in sequence. Food Chain
Overlapping food chains with different pathways for the flow of food energy in an ecosystem Food Web
Animals that eat only plants. Herbivores
Animals that eat other animals. Carnivores
Orgainsms that transform energy from the sun and use carbon dioxide and water to make food Producers
Organisms that eat producers or other consumers to obtain energy Consumers
Organisms that get their energy by feeding on producers Primary Consumers
Organisms that eat primary consumers Secondary Consumers
Organisms that get their energy only by eating secondary consumers Tertiary Consumers
A tool that shows how much energy transfers to the next level in a food chain. Energy Pyramid
How much energy is transferred to each trophic level? 10%
Created by: lmsraiders