Many people in our community have made it possible for you to
explore life in our watershed with Splash – scientists, teachers,
government workers, parents, and grandparents from all over
Sacramento. Sharing our knowledge and appreciation of water and
nature is one way we can show you that we care about you and this
place we call “home.” We know that water and habitat protection
starts with education.
There are two kinds of “used water” that affect water quality.
The water we use indoors is one. It flows from our sinks,
bathtubs, showers, toilets and washing machines into underground
pipes that make up our Sacramento sewer system. Once this indoor
water enters the sewer system, we call it wastewater. Imagine
what would happen if we dumped wastewater in the river!
The goal of every plant and animal is the same: To create the
next generation. The way a plant makes another generation of its
species is by making seeds. Flowers are the tools that plants use
to make their seeds.
Chlorophyll is the main substance on Earth that
can capture the energy in sunlight and store it. It is in all
green plants. Chlorophyll allows plants to turn the sun’s energy
into building blocks to build their bodies. These building blocks
are called carbon molecules. They are too small to see (even with
a microscope) but all plants and animals are made from them.
Once you have made a Critter Guide or two from Lesson 6, make up
a little commercial to tell others the cool things you know about
each one. You will impress your friends, parents and neighbors.
Animals and plants come in all sizes and shapes. When you are
searching for one, knowing its size can be as important as
knowing what it looks like. How can you find something if you
don’t even know how big it is?
Suppose you are searching for an elephant, a cat and an ant. You
would not bother to look under the bed for an elephant, but you
might check there for a cat or an ant. You could spot the cat
right away, but you would have to look more closely to see the
ant. Knowing what you are looking for and how big it is makes it
much easier to find.
Question: How does a scientist look?
Answer: Carefully.
Most students are natural born scientists because they are
curious and ask a lot of questions. It is the nature of a
scientific mind to observe (watch) something and want to know
more. Your observations can help you to understand what is going
on in nature and to predict what else might happen.
California vernal pools are a rare type of wetland that exists in
very few places on Earth. Around Sacramento, the pools are found
in rolling grassland. What makes vernal pools different from
other wetlands, ponds or lakes is that they are temporary pools.
They are totally dry for eight months of the year during our dry
season. In fact in order to have vernal pools, you need a wet
season and a dry season, just like the Mediterranean climate of
California.
A watershed is all the land connected by the fresh water flowing
through it. Everybody lives in a watershed and everything we do
takes place in a watershed. In Sacramento we live in the
Sacramento River Watershed, the largest watershed in California.
As soon as the winter rains begin to puddle in the vernal pools,
tiny creatures called bacteria and protozoa spring to life. Many
of them feed on detritus, bits of dead plants and animals that
lie on the bottom of the pool. These detritus feeders are, in
turn, eaten by many other tiny animals. Microscopic (very tiny)
green plants called algae are the next to appear. They are like
tiny floating food factories, providing the energy that powers
most of the other species in a vernal pool.
