A food web is a model made of intersecting food chains.
food web
A resource that CAN be made again by nature.
renewable resource
A living thing that is no longer found alive anywhere on Earth today.
extinction
Name a common gas.
(answers vary)
Name a common liquid.
(answers vary)
A living thing that helps break down dead and decaying matter.
fungi
Tiny droplets of condensed water vapor floating high above the ground.
clouds
Pumps blood throughout the body providing it with oxygen and removing waste.
circulatory system
Anything that has weight and takes up space.
matter
Name a renewable resource.
(answers vary)
The cycle of the water evaporating and condensing on earth. It has been happening for millions of years.
water cycle
A sequence of living things in which each one feeds on the living thing below it.
food chain
Living things that break down dead and decaying organisms. The most common decomposers are bacteria and fungi.
decomposer
Provide living things with energy and building blocks to grow.
nutirents
What happens when two or more substances are combined?
a new kind of matter is formed
The action of the earth turning or spinning around its center. If you stand in one place and turn all the way around, you have rotated. The earth rotates (spins) once every 24 hours.
earth's rotation
Characteristics or attributes.
properties
Tiny living things that are everywhere around us. We can only see them with a very powerful microscope. They come in different shapes such as rods, spirals, and spheres. Bacteria are important in an ecosystem to break down dead and decaying
bacteria
When a liquid turns into a gas.
evaporation
Water that falls to the ground. Comes in 3 main forms: rain, snow, and hail.
water cycle
Water in gas form.
water vapor
At risk of dying out.
endangered
Name a common solid.
(answers vary)
Name a nonrenewable resource.
(answers vary)
A property of matter that measures how close together the particles are inside a substance. This can determine things like if something will float or sink.
density
A resource that CANNOT be made again by nature.
nonrenewable resource
True or False: All energy sources are UNLIMITED.
false
The number of times your heart beats each minute.
heart rate
A living thing (almost always a plant) that takes energy from the sun and make its own food. They are found in the first level of a food web.
producer
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