Environments Powerpoint

Environments
Terrestrial and Aquatic

Vocabulary
Terrarium:
a mini garden in an
enclosed container
Organism:
any living thing, including
plants and animals
Environment:
everything that
surrounds and
influences an
organism
Environmental Factors: one part of the
environment. Can be
living and non-living: water,
light, temperature, chemicals or
a plant or an animal

Environmental Factors

Terrestrial Environments
Understandings
How do you determine what is an
environments?
– An environment is everything that
surrounds an influences an organism.
How do we distinguish one thing
from another?
– Each part of an environment, living or
non living, is recognized as an
environmental factor.

Terrarium Observations
How do the sides and the top of the
terrarium look?
How does the soil look?
Have any seeds sprouted?
What kin sprouted first? What kind
sprouted last? (or yet to sprout?)
What type of plant grows best in the
terrarium?
Which group’s s terrarium is doing best?

Terrarium Observations
How have the living factors of the
environment changed?
How have the non living factors
changed?
How would you recommend planting
seeds in a terrarium?

Germinate
– When a seed germinates, it sprouts, or
starts to grow and develop

How does the environment in the
terrarium change over time?
– Some plants grow but not all
– Moisture forms on the sides of the
container
– Plants need water and light to grow

Investigation Two
Bugs and Beetles, Oh My!

Investigation Two
Part One
Organize into teams
Introduce isopods and beetles
– They are living animals and nothing
should be treated with respect
We will have:
– isopods
– darkling beetles (tenebrio(
– adult
mealworms)

Environmental Preference
Isopods
–Moist area
–Decayed
vegetation
–Wood and bark
(mulch)
–rock
Darkling Beetles
–Dark dry place
–Log
–Leaves
–Cereal

Animals and Environmental Factors
and Preference
We can keep these animals in our
terrariums if the environment is
suitable. Let’s s find out what kind of
environment our animals prefer.
Can you think of a way to use your
runways to find out how much water
isopods and beetles like in their
environment?

Bugs and Beetles
Part 2
Responding to Moisture

Part 2
Responding to Moisture
You will need:
– Student Sheet No. 6
– Response Sheet – Bugs and Beetles

Part 2
Responding to Moisture
Let’s s design an experiment to determine
moisture preference
Use three equal piles of soil separated
from one another by a bit of open space
One measure of the soil should be dry,
another moist, and a third wet
The isopods and beetles need plenty of
time to explore the environment in order
to show preference

Part 2
Responding to Moisture
Use three equal piles of soil
separated from one another by a bit
of open space
One measure of the soil should be
dry, another moist, and a third wet
The isopods and beetles need plenty
of time to explore the environment in
order to show preference

Part 2
Responding to Moisture
Soil samples will all be 50 mL
Wet soil is made by adding two 5 mL
spoons of water to 50 mL of moist
soil and mixing thoroughly
The samples of soil with different
moistures should be touch each
other in the runway
One team will investigate isopods,
the other beetles.

Vocabulary
Variable: something that can be
changed
Environmental factor: one part of the
environment. It can be nonliving or
living
Isopod
Beetle

Inquiry Questions
How can we determine what type of
environment isopods and beetles
prefer?
Design an investigation by
controlling the environmental factors
(variables) so that one factor can be
observed at a time.

Preferred environment: : the set of
environmental conditions that an
organism appears to choose over
other conditions
How much moisture to isopods and
beetles prefer?
– Isopods usually prefer moist
environments
– Beetles usually prefer dry environments

What evidence have you gathered
that indicates your animals’
environmental preference for light?
Describe the preferred environment
of isopods and beetles from the
evidence we have so far.
Why do you think isopods prefer
more moist environments than
beetles?

Isopods and beetles usually prefer
dark environments

Investigation 3
Water Tolerance

What is it?
Water Tolerance
Organisms have ranges of tolerance for
environmental factors.
Organisms have specific requirements for
successful growth, development, and
reproduction
Optimum conditions are those most
favorable to an organism’s s survival,
growth, and reproduction

Vocabulary
Water Tolerance
– Preferred environment
– Environmental factors
– Optimum conditions
– Tolerance
– Range of tolerence
– Controlled experiment

Water Tolerance
How would you design an experiment
to investigate water tolerance?
Your experiment must have to
following:
– Materials
– Specific procedures
– Independent variable
– Dependent variable
– How will you collect data?
– How would you graph the data?

Aquatic Environments
Investigation 4

Part 1: Goldfish Aquariums
Getting Ready
– Age tap water
What?
– When are the goldfish coming?
– Elodea
– The future of our goldfish
– Read Science Stories: Aquatic
Environments Around the World

Part 1: Goldfish Aquariums
Discuss Aquatic Environments
Introduce the Aquariums
Familiarize yourself with this section
in your journal

Goldfish Environment
Aged or conditioned tap water
Light and heat
Aquarium wall
Gases and other materials in the
water
Other goldfish
What’s s missing?

Goldfish Environments
We need to treat our tap water to
make it a suitable environmental
factor for our new friends
We will use a water conditioner

Acid in the Water

Acid in Water
Bromothymol blue
– What is it?
– Tests for acidity in water
– If the water turns blue: none
– If water turns green: little acidity
– If the water turns yellow: significant
amount of acid present

Acid in Water
What might cause the different in the
amounts of acid in the water
samples?

Acid in Water
Could we design an experiment to
test the source of the acid?
I will give you a hint on the
materials:
– Investigations with BTB sheet in journal
– 3 cups
– 3 lids
– 1 beaker
– 1 goldfish
– 1 sprig of Elodea
– BTB chemical (please be careful)

Acid in Water
What happen?
What can we conclude?

Acid in Water
Content (this would be included in
your conclusion – or is should be : )
– Carbon Dioxide CO2 produced by
aquatic organisms changes the acidity
of the water

Acid in Water
Vocabulary
–Indicator:: a chemical used to test for
the presence, absence, or amount of
a substance in a material (ex. BTB
tests for the presence of acid)
–Carbon dioxide: : is a colorless,
odorless gas, present in the
atmosphere. It is released by
animals and plants during respiration

Aquatic Environments
Part 3: New Organisms

Science Stories
New Organisms
– Water Pollution: The Lake Erie Story,
Sources of Water Pollution, and What is
an Ecosystem?

New Organisms
What could we do to the goldfish
aquarium to make it more diverse
and interesting?

New Organisms
Small pond snails
Gammarus – a “hardy” crustacean
What would adding these new
organisms do for our aquarium?

New Organisms
What is a natural freshwater
environment like?
How is an aquarium similar to a
natural freshwater environment? How
is it different?
Which organism (plant or animal) is
your favorite one in this investigation
and why?
If you were to set up an aquarium
again, what would you do differently
and why?

New Organisms
What changes have we noticed in our
aquarium?
If our aquariums were located in the
sun, what might happen?
If we were able to add new
organisms, what might happen?
Would the goldfish eat small
crustaceans?
Would the small crustaceans eat
anything?
What do we call this?

New Organisms
Let’s s make sure we are up-to
to-date
on our vocabulary
New Content Understanding:
An aquatic environment can contain
many different organisms
Extension Activities

Investigation 5
Brine Shrimp

Brine Shrimp – Setting up the
experiment
What are the different types of
environments we have discussed?
– Terrestrial (land)
– Aquatic (water)
Key Ideas
– Range of Tolerance
– Salinity

Introduce Brine Shrimp
What are they?
Dr. Bryan needs to finds out if
salinity is an environmental factor
that affects the hatching of Mono
Lake’s s brine shrimp eggs. She needs
to design an experiment to find an
answer to her question.

Brine Shrimp Vocab. and Content
Understandings
Brine Shrimp: are tiny animals
related to crabs and lobsters.
Brine shrimp are found in salt
ponds and lakes
Salinity: how salty water is, the
concentration of salt in water
Range of tolerance: the range of
what a certain animal can handle
of one environmental factor

Brine Shrimp Vocab. and Content
Understandings
In a controlled experiment
one variable (salt) is isolated
and tested. All other
variables are held constant
(controlled) ex. Amount of
water, amount of brine
shrimp eggs

Brine Shrimp Hatching
0
spoons
Salt Conditions
2
spoons
4
spoons
6
spoons
Most
Some
None

Part 3
Viability

Determining Viability
Did any more brine shrimp hatch?
When something is alive and able to
function and grow, it is said to be
viable.
Viable: alive or able to grow.

Determining Viability
Do you think the eggs that didn’t
hatch are viable or dead? How could
you find out if the eggs that have not
hatched in your cups are still viable
(alive and able to grow)?

Determining Viability
Brine shrimp eggs remain viable but
don’t t hatch until the conditions are
within the range of tolerance for that
organism