Light travels in a ___________ __________ until it strikes an object.
straight line
100
This shows how energy flows from one organism to another. The energy starts at the sun.
food chain
100
It takes 24 hours for the Earth to spin on its axis. The spinning of the earth on its axis is called ____________.
rotation
100
Biofuel, wind, solar, geothermal,and hydroelectric are all examples of alternate _______________ sources
energy
100
The boiling point of water is _________
100 degrees Celsius
200
What is the bouncing of light off of a surface such as a mirror or other shiny surface?
reflection
200
An organism that makes it own food through the process of photosynthesis is called a _____________.
producer
200
This is one trip around the sun. The Earth takes 365 days to do this.
revolution
200
That is the thick, black liquid (fossil fuel) formed from the remains of ancient sea organisms that were buried under layers of sediment over millions of years?
Oil
200
The freezing point of water is __________.
0 degrees Celsius
300
What is the bending of light when it travels from one medium to another?
Refraction
300
An organism that has to eat or consume food to get energy is called a _____________.
consumer
300
What provides the energy for the water cycle to keep going and going.
sun
300
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.
Coal
300
How you would separate a mixture of sand and iron filings?
Use a magnet to collect the iron filings
400
Lenses, glass of water, camera, microscope, telescope are objects that ______________ light.
refract
400
The living and non-living parts of an organism's environment is called an _________________.
ecosystem
400
____________ has no atmosphere, no water, and also has many craters on the surface.
The moon
400
__________, ___________ and _________ contribute to the formation of landforms such as deltas, canyons, and sand dunes.
water wind ice
400
Salt water, kool-aid, soda, and lemonade are examples of a _______________.
solution
500
A clear triangular object that bends light and breaks it into its colors is called a _____________.
Prism
500
The cycle involving both plants and animals where there is an exchange of gases that are necessary for both organisms to survive is called the _____________ ___________ cycle.
carbon-dioxide oxygen
500
What is the center of our solar system?
The Sun
500
This is the average weather conditions of an area over a long period of time.
climate
500
A ____________ allows heat or electricity to pass through it easily.