Energy
energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are naturally replenished
renewable energy
where an organism naturally lives
habitat
push or pull
force
A device that makes work easier
Simple Machine
a treeless grassy plain
prairie
These are disadvantages to what energy? They are unattractive, dangerous to birds, not available in all locations.
wind
animal that is hunted and killed by another for food
prey
the distance traveled in a certain amount of time
speed
has 2 parts, one part is a bar that passes through the other part, the bar turns a small force into a larger force
Wheel and Axle
organism that breaks down plant and animal material into simple chemicals, that can then be reused in the ecosystem
decomposer
Name three sources of renewable energy
solar, wind, water, geothermal, biomass
description of the feeding sequence of one set of organisms in an ecosystem, such as grass seeds, chipmunk, and hawk; food chain arrows point in the direction of the flow of energy from one organism to another
food chain
the force that acts against objects in motion when one surface touches another
Friction
can be fixed or moveable, can change the direction of force or decrease the effort force, the more you use the less force you need.
Pulley
variable that you measure in the experiment and what is affected during the experiment
dependent variable
the process whereby heat changes something from a solid to a liquid
thawing
an individual animal, plant, or single-celled life form
organism
the name for SPEED and DIRECTION
Velocity
allows you to push or pull instead of lift, a ramp is an example.
Inclined Plane
point at which a lever arm pivots
fulcrum
These are disadvantages of what energy? Not available at night, expensive, panels are inefficient.
Solar
A trait that helps an organism survive and reproduce
Adaptation
causes objects at rest to remain at rest and objects in motion to remain in motion
inertia
A tweezers is an example of this simple machine
Lever
a colorless, odorless, tasteless, gaseous mixture, mainly nitrogen (approximately 78 percent), oxygen (approximately 21 percent), and water vapor with lesser amounts of other gases
air