Transcript Activity 2 - Duluth High School

Activity 2.1
This Place Called
Earth
review
Do You Remember The 7
Activities?
1.
2.
3.
4.
5.
6.
7.
What is Earth made of?
How much water is there?
What forms does water come in?
What is the heat capacity of water?
What is special about surface tension?
Where is earth in the “Big Picture”?
How is Earth like a space station?
WHAT IS THE EARTH
MADE OF?
Key words:
• Core, mantle, crust
• Lithosphere
• Atmosphere
• Hydrosphere
• Ecosphere (biosphere)
• Earthquake waves
How Much Water
Is There?
• Our Earth is 70% water,
30% land.
• Water is the most
abundant compound in
all living organisms!
• The “blue planet”
• Water is found in lakes,
rivers, streams, soils,
aquifers, glaciers, ice caps
and in the atmosphere.
What Forms Does
Water Come In?
• At normal climatic
temperatures, water
occurs in all 3 states!
• It is the molecular speed
that determines the state
of matter.
• Heat is needed to change
water’s physical state.
• What happens when
liquid water freezes?
• Why is this important to
life on Earth?
What Is The Heat
Capacity Of Water?
Heat capacity- the ability of a
substance to absorb and
retain heat.
• Which substance took the
longest to heat up? Cool
down?
• Why is this important for
life on Earth?
• Oceans moderate the
Earth’s climate!!
• Why do deserts have more
extreme daily
temperatures than places
by the ocean?
What Is Special About
Surface Tension?
• Surface tension - the
ability of water
molecules to stick
together.
• Why is surface tension
important to life on
Earth?
Where Is Earth In
The Big Picture?
• How is the
placement of Earth
within our solar
system important to
life?
Why Is Earth
Like A Spaceship?
Think:
Cycles
Law of conservation of matter
What Word Comes
To Mind???
•
•
•
•
•
•
•
•
•
Ability of water molecules to stick together
Surface tension
Ability of water to absorb and retain heat
Heat capacity
Determines the state of water
Molecular speed (heat)
Thinnest layer of our earth
Crust
Explains the parts of the Earth (core, crust,
mantle)
• Earthquake waves
• Enables water to travel through roots,
and up tree trunks
• Surface tension
• Where all life can be found
• Biosphere
• The solid portion of Earth’s crust
• Lithosphere
• What percent of our planet is water?
• 70%
• Ice is ____ dense than liquid water
• less
•
•
•
•
•
•
Name 3 inputs for both humans and animals
Oxygen, food, water
Name 3 outputs of both humans and animals.
CO2, feces, urine, water vapor
Name 3 outputs of plants
Water, food, oxygen, non-food
plant material
• Be able to give specific
examples of how
outputs/inputs are related.