Transcript Environmental Science: Section 2

Environmental Science:
Section 2-1
Cycles of Matter
1
The movement of water between the
oceans, atmosphere, and living things is
the __________________________.
• water cycle
2
The changing of water from liquid
to vapor is called
________________________.
• Evaporation
3
During _______________, water vapor
cools and returns to a liquid state.
• Condensation
4
Water that falls from the atmosphere
to the land and oceans is called
___________________.
• Precipitation
5
Precipitation that falls on land and then
flows into streams, rivers, and lakes is
called _________________________.
• 5. runoff
6
Precipitation that seeps into the
ground and is stored among rocks is
called ________________.
. groundwater
7
Water vapor is released by plants and
returned to the environment in a process
called ____________________.
• 7. transpiration
8
Name three reasons water is needed for life
on Earth.
• transports nutrients
• transports wastes
• regulates temperature
9
What are organic molecules?
• C : molecules that contain carbon
10
How do animals get carbon?
• 10. D : by eating plants
11
In what process is carbon returned to the
environment?
• C : respiration
12
What happens to carbon dioxide
during photosynthesis?
• plants use it to make sugar
13
What happens during decomposition?
• fungi and bacteria break down organic
matter
14
What happens during combustion?
A substance burns
15
The movement of nitrogen between the
environment and living things is called the
__________________.
• nitrogen cycle
16
The process in which bacteria in the soil
change nitrogen gas into forms plants can
use is called ____________________.
• nitrogen fixation
17
Why do organisms need nitrogen?
• to build proteins and DNA for new cells
18
Name two things that perform nitrogen
fixation.
• decomposition (bacteria and fungus)
• lightning
19
How do plants get the nitrogen they
need?
plant roots take up nitrogen from the soil
20
How do animals get the nitrogen they need?
by eating plants or organisms that eat
plants
The End ….52 dead cows from one
lightning strike