Mix and Flow of Matter
The state of matter that has a definite shape and volume.
Solid
The smallest unit that can perform the functions of life
Cell
The form of energy that you can see
Light
The mass of an object that is moved or lifted by a machine such as a lever.
Load
Water such as lake water, river water, pond water and well water
Fresh Water
Conversion of a substance from the solid to the gaseous state without it becoming liquid.
Sublimation
What are two structures found in plant cells that are not found in animal cells, and what is their function?
Plant cells have a cell wall, which provides support and protection, and chloroplasts, which carry out photosynthesis. Animal cells do not have these structures.
Incandescent Source
You exert a force of 2.0 N on a lever and moved it a distance of 0.6 m. Calculate the work.
W = F x d
W = 1.2 J
Controls the distribution of Earth's water as it evaporates from bodies of water, condenses, precipitates and returns to those bodies of water
The Water Cycle
Mixtures that contain 2 or more materials that are still visible.
Heterogeneous Mixture or Mechanical Mixture
Surrounds the cell and protects the cell's contents; selectively permeable; regulates the passage of substances into and out of a cell
Cell Membrane
The emission of light produced by chemical reactions inside the bodies of living creatures.
Bioluminescence
Name the six simple machines that are the building blocks of all mechanical systems.
Lever, wheel and axle, pulley, inclined plane, wedge, and screw.
These underwater volcanoes rise from the ocean floor but do not reach the surface.
Seamounts
The substance that dissolves in a solvent to form a solution.
Solute
The system that breaks down food, absorbs food particles and eliminates wastes.
Digestive System
In the eye, the colored ring; works like the diaphragm of a camera
Iris
Pulley
An area of land that drains into a body of water; also known as drainage basin.
Watershed
The property that describes a liquid's thickness or thinness.
Viscosity
55% of the blood that carries nutrients, waste products, hormones and blood cells.
Plasma
The process in which light strikes a surface and bounces back off that surface.
Reflection
A mechanic replaces a short wrench with a longer wrench to loosen a tight bolt. Which simple machine is being used, and why does the longer wrench help?
A lever. The longer wrench increases the effort arm, creating more torque and making the bolt easier to turn.
Excess nutrients from fertilizers can cause this rapid growth of algae in lakes and ponds.
algal bloom
The formula to calculate density.
D(Density) = m(Mass) / V(volume)
This occurs when the unprotected wall of the stomach or small intestine is damaged by excess stomach acid.
Ulcer
A reference line drawn perpendicular to a reflecting surface at the point where an incident ray strikes the surface.
Normal
You apply 500 N of force to a piston with an area of 5 cm2. Calculate the pressure on the piston.
p = F / A
p = 100 N/cm2
The largest tidal movements; occur when Earth, Moon and Sun are lined up
Spring Tides