Show:
Earth/Space
Life Science
Chemistry
Physics
Environ/Electricity
100
The breaking down of Earth's rocks, soils, and minerals through direct contact with the planet's atmosphere
What is weathering
100
Amoeba, euglena, and paramecium are all ______ _____ organisms
What is single celled
100
"The mass of a whole object is always equal to the sum of its parts" is an example of conservation of ___________
What is matter
100
What is the pulling force that attracts objects to Earth
What is gravity
100
Coal, oil, natural gas, and minerals are all _________________ natural resources
What is nonrenewable
200
The process of weathering and the carrying away of sediment, soil, rock and other particles
What is erosion
200
Changes to a plant or animal's ________________ (it's natural surroundings) may cause it to survive well or not survive at all.
What is environment
200
Heat changes a solid to a ___________ and a liquid to a ___________
What is liquid and gas
200
Change of an objects motion (slowing down or accelerating) depends on the _________of an object and the ____________applied to it
What is mass and force
200
Name two renewable natural resources
What is plants/animals/water/soil
300
Day and night is produced by the earth's
What is rotation
300
Most cells can only be studied using a tool called a
What is microscope
300
Water freezes at _______degrees farenheit and _______degrees Celsius
What is 32 and 0
300
What force causes objects to slow down and produce heat when objects rub together (such as car breaks or rubbing hands together)
What is friction
300
Name a human activity that may have a positive consequence on the natural environment
What is recycling/good farming practices/conservation/etc
400
The way a mineral reflects light is called
What is luster
400
The primary source of energy for all living organisms
What is the sun
400
A process involving a substance changed from one state (solid, liquid, gas) to another WITHOUT altering its chemical composition is called a _____________change.
What is physical
400
Light travels in a straight line unless _____________ or _____________ (Hint: both words start with "r")
What is reflected and refracted
400
Magnets have a __________ and _________pole. Opposite poles ___________ and like poles _________.
What is north and south; attract and repel
500
The main source of energy that causes changes in the water on earth
What is the sun
500
Some insects and organisms called decomposers actually eat plants and animals that are ___________
What is dead
500
A chemical change is when substances mix to produce a different chemical substance, name two signs that a chemical change may have occurred.
What is color change/heat released or absorbed/odor/produces a gas (air bubbles) or solid (mold)/can't be reversed
500
Objects in a mirror are reversed front to back, but are the same ____________ and ___________ away as the original object
What is size and distance
500
Electricity flows through some objects more easily than others. _______________-let electricity flow _______________-do not let electricity flow easily
What is conductors and insulators