9. Scientific Definition
Food is matter(building
materials) that contain
energy that living things
can use to live and grow.
10. All living things use the energy and matter
in food to grow and to keep all their parts
working properly.
11. Matter is the stuff (materials)
that things are made of.
Scientists usually define matter
as anything that takes up space
and has mass.
Matter provides the physical
building blocks that living things
use to grow (become bigger).
12. Energy is what makes all
your cells and body
parts work. It gives your
body the power to
breathe, to move blood, to
move muscles, to repair
cuts, to think, and all the
other things your body
does.
23. Remember if it’s food then it must have …
Calories=energy
Matter/mass=grams
24. Why does this all matter?
Well, all living things are
connected to one another
in what scientists call
food webs. Each
organism in a food web
has a specific purpose
related to food!
25. Living things depend on one another to get
the food energy they need to live and grow.
26. In every food web, there are three
main types of organisms:
Producers Consumers Decomposers
31. Most producers are
green like
grass, trees, shrubs, a
nd vines. Producers
are important
because they are the
only organisms that
can use energy from
the sun to make their
own food energy.
35. Energy enters most
ecosystems and food
webs as light from the
sun. However, living
things cannot use
sunlight directly to get
energy to live and
grow.
36. Basic photosynthesis…
Sun
Light from the sun has to be
converted into chemical
energy stored in food
molecules…
37. photosynthesis at work…
The plant uses the Sun
energy in sunlight to
build high-energy
sugar molecules out of
Light Energy
low-energy molecules.
39. photosynthesis
The high-energy Sun
bonds within
sugar, when
broken, release
usable energy for the Light Energy
plant to live and
Carbon Dioxide
grow. Sugars
Water
40. photosynthesis
Sun
Sugars stored
within the plant Carbon Dioxide
are also the energy
source/food for Light Energy
animals that eat
the plant. Sugars
Water
41. photosynthesis
The plant needs the
sugars for its own source
of energy to live. The Sun
sugars are made in the
leaves through
photosynthesis and then Light Energy
move throughout the
plant to give energy to
Sugars
every cell in the plant.
42. photosynthesis
Oxygen is Sun
released from
the plant as
non-energy Light Energy
supplying
matter. Oxygen
43. Put it all together…
Basic Photosynthesis
Sun
Carbon Dioxide
Light Energy
Oxygen
Sugars
Water
44. Food and energy chains begin with
producers, which convert the energy in
sunlight into chemical energy in food.
54. Decomposers break down matter from
dead producers and consumers into
smaller and smaller particles that are
released into the environment as air,
water, and soil.
55. These particles, called nutrients, can
be used again by plants for
matter, but not for energy.
62. Credits
Slide Number 2: Steven Depolo, “Qiqi Sandmann’s Ribs” April 17, 2011 via
Flickr, Creative Commons Attribution.
Slide Number 7: Pacific Northwest National Laboratory, “Food Services and Process
Measurement Laboratory” June 17, 2009 via Flickr, Creative Commons Attribution.
Slide Number 12 and 44: Barbara Blmiers, “Nature-Animal-Wildfire-White-tailed-Deer”
October 16, 2011 via Flickr, Creative Commons Attribution.
Slide Number 17: Brandon Baunach, “Crying Baby” August 8, 2007 via Flickr, Creative
Commons Attribution.
Slide Number 22: Loiez Deniel, “Cat vs. Fish” September 4, 2009 via Flickr, Creative
Commons Attribution.
Slide Number 28, 48, 49, and 53: Ryan Steele, “Mushrooms” August 15, 2004 via
Flickr, Creative Commons Attribution.
All other images were created using an IPhone.
