how does light travel?
In a straight line until it strikes an object
Renewable or nonrenewable energy: Biofuel, wind, solar, geothermal,and hydroelectric energy
What is an examples of renewable energy sources?
This fossil fuel was formed from the remains of ancient swamp plants that were buried by layers of sediment and exposed to lots of heat and pressure over millions of years.
What is Coal?
These objects _____ light: lenses, glass of water, camera, microscope, telescope
What are objects that refract light?
The living and non-living parts of an organisms environment.
What is an ecosystem?
These two celestial bodies (one is not a planet) have little in common, although they are fairly close to each other. One has an atmosphere and lots of water and living things, the other has no atmosphere, not water, and not even aliens live there. It also has many craters on the surface.
What are the moon and the Earth?
These three things contribute to the formation of landforms such as deltas, canyons, and sand dunes.
What is deposition, weathering and erosion (water, ice, and wind)?
When something, usually a solid is added to a liquid and it "disappears". Some examples include salt water, kool-aid and soda, not to mention lemon aide.
What is a dissolve?
The cycle involving both plants and animals where there is an exchange of gases that are necessary for both organisms to survive. 2 gases are needed
What is the carbon-dioxide oxygen cycle?