1. Chapter 6, Lesson 4
Cycles of Life
water cycle
carbon cycle
nitrogen cycle
water vapor
groundwater
watershed
runoff
composting
raw materials
inexhaustible
resource
renewable resource
non-renewable
resource

2. Water Cycle – the continuous
movement of water between the Earth’s
surface and the air, changing from liquid to gas
to liquid.

3. Carbon Cycle – the continuous transfer of
carbon between the atmosphere and living things.
Just like water in the water cycle, carbon is renewed in
the carbon cycle.
Click on the picture to play the
carbon cycle labeling game!
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videos.

4. Nitrogen Cycle – the way nitrogen
moves between the air, soil, plants, and
animals.
Click on the picture for more Click on the picture for more
information. information.

5. water vapor – water in its gas state

6. groundwater – water that seeps in and
is stored in the ground

7. watershed – an area on which water runs
downhill to a common stream, lake, or river

8. runoff – water that moves across the land,
heading for low places, and eventually, the ocean

9. composting – a process by which organic
matter like leaves, plant materials, food scraps and
grass clippings breakdown to be used in the soil.
The compost contains nitrogen, phosphorus, and
potassium, which help enrich the soil.

10. raw materials – things that are used
to make products – wood, metals, sand, oil are
all raw materials

11. inexhaustible resource – a
resource, like the sun, that will not run out

12. renewable resource – a resource,
like plants and animals, that can be grown, or
produced to make more

13. nonrenewable resource – many
raw materials, such as oil and metals are non-
renewable resources