Matter
What is the smallest form of matter that we have talked about?
atoms
The source of all energy in an ecosystem
Sun
Most of Earth's water is in what form?
Ocean
How many variables do you change during an investigation?
1
Conditions that can change over a short period of time e.g. days, hours.
Weather
What means to mix a solid evenly into a liquid by breaking down into smaller pieces to small to see?
Dissolve
The source of all food matter in an ecosystem.
Plants
Which item would have to be observed at the nanoscale? eyelashes, molecules, pebbles, or grains of sugar
molecules
What kind of circuit allows electrical energy to flow through it?
closed
Conditions that take a long time to change over a large area, e.g. months, years.
Climate
What causes molecules to dissolve?
attraction
What breaks down dead plants and animals into nutrients for the soil.
Decomposers
Pepper and cumin will leave these pieces in any liquid. We don't want them in our salad dressing.
sediments
Stirring a mixture of a solid and liquid can help the solid ______________.
dissolve
The process of breaking rock into sediment is called _____
Weathering
Animals eat food for growth and ___
energy
If one organism in an ecosystem becomes unhealthy, it can affect the whole.......
Ecosystem
Name two ways that humans can affect the amount of freshwater available.
pollution and overuse
What form of energy transformation occurs in a light bulb?
Electric to Light/Thermal
The process where Earth materials, like soil and rock, are broken down and transported from one place to another.
Erosion
What is the name of the model that was used to separate the ink? What did that model show with the colors?
chromatography - it showed the density of the different colors
What three things do plants need to make their own food?
Sunlight, water, and carbon dioxide.
What causes canyons to form?
Erosions.
a material that allows electricity to flow through it easily, like wires in a circuit.
Conductor
a coordinate that measures how far north or south of the equator a location is
latitude