March 19, 2013
Science Monday
3/18/13
Moon Facts
Modeling Moon Phases
Assignment:
Ch. 2 Review
Due: THURSDAY
March 19, 2013
Moon Facts
The moon rotates as it orbits Earth.
March 19, 2013
Moon Facts
The moon rotates as it orbits Earth.
It's length of 1 rotation
is equal to the time it
takes for 1 revolution...
These both take about
27.3 days which is
about 1 month.
March 19, 2013
Moon Facts
The moon rotates as it orbits Earth.
It's length of 1 rotation
is equal to the time it
takes for 1 revolution...
therefore, we only
ever see 1 side of
the moon - the "near
side".
March 19, 2013
Moon Facts
The moon's surface varies.
March 19, 2013
Moon Facts
The moon's surface varies.
When objects in
space hit the
moon they make
craters on the
surface.
the moon has no air or water
= no erosion of features
March 19, 2013
Moon Facts
The moon's surface varies.
See the
dark areas?
they are
younger areas
See the
light areas?
they are older
areas
March 19, 2013
Moon Facts
The moon's surface varies.
Mare - low altitude,
flat area formed by
lava filling craters
Highlands - higher
altitude areas
the moon has no air or water
= no erosion of features
March 19, 2013
Moon Facts
The moon's structure has layers.
The moon's
layers are just
like the layers
Highlands
of Earth.- higher
altitude
areas (light
inside = core
middle = mantle
area)
outer = crust
mantle
core
crust
March 19, 2013
Phases of the Moon
The moon looks different during
the month. We have names for each phase.
March 19, 2013
Phases of the Moon
1.
no light
4.
2.
3.
waxing = light growing
5.
6.
all light
gibbous = mostly lit
7.
8.
waning = light shrinking
crescent = little light
9.
new cycle
March 19, 2013
Phases of the Moon
The moon looks different during
the month....WHY?
March 19, 2013
Phases of the Moon
Some believe the moon looks different
because the earth casts a shadow on the
moon --- NOT TRUE
March 19, 2013
Phases of the Moon
Just like
earth,
only half the
moon is lit at
a time.
March 19, 2013
Phases of the Moon
March 19, 2013
Phases of the Moon
Being half lit
is what
causes the
moon
phases.
March 19, 2013
Phases of the Moon
Being half lit
AND seeing
the moon at
each position
in its orbit.
March 19, 2013
Phases
of
the
Moon
Use the moon models to create the phases of
the moon with your partner. Remember to
keep the lit side facing our sun (the front of the
room).
Tell your partner to stop "orbiting" when you
see a phase you can name - use your notes.
Your goal is to name all the phases in an
entire moon orbit.
Switch orbiters so everyone has a chance.
March 19, 2013
Science Tuesday
3/19/13
Eclipses / Tides
Moon Posters
Assignment:
Ch. 2 Review
due: Thursday
March 19, 2013
What causes an eclipse?
March 19, 2013
Solar Eclipse
March 19, 2013
Lunar Eclipse
March 19, 2013
Tides occur because
of the moon, too.
March 19, 2013
March 19, 2013
The moon's gravity changes the
shape of Earth's oceans.
March 19, 2013
The moon's gravity changes the
shape of Earth's oceans.
March 19, 2013
Move the moon to a location that
would cause these tides.
March 19, 2013
Discuss with an "elbow partner"
why spring tides are more
exaggerated than neap tides.
March 19, 2013
1. Make a sun on 1 side of your paper and an
earth for the center.
2. Cut out your moon phase pictures.
3. As a group, arrange them in the correct order
around the earth.
4. Label each phase.
Be sure to think about where the sun is when
attaching your pictures.
March 19, 2013
Science Wednesday
3/20/13
Warm-up
Mass/Gravity/Weight
Think/ Pair/ Share
Assignment:
Space Test Thursday, April 4th
March 19, 2013
Choose a type of space technology
( telescopes, probes, orbiters, etc. ) and
explain the following...
How has it helped us?
What are its limitations?
March 19, 2013
Copy this chart on page in your notebook.
TECHNOLOGY
BENEFITS
LIMITATIONS
March 19, 2013
1. What is mass? What is gravity? What is
weight?
2. How could you change your mass/weight
on Earth?
3. How and why does your weight change on
different planets?
March 19, 2013
Mass - the amount of matter in
an object, regardless of how much
space the object takes up.
March 19, 2013
Equal sized amounts of cotton
and lead. What can you tell
me about their masses?
March 19, 2013
Gravity - a pulling force on mass
Earth's gravity pulls us downward, for example.
March 19, 2013
More mass = stronger pull
of gravity
March 19, 2013
Equal sized amounts of cotton
and lead. What can you tell me
about gravity's pull on each?
March 19, 2013
Weight is the measure of the pull
of gravity on your mass.
March 19, 2013
Equal sized amounts of cotton
and lead. What can you tell me
about the weight of each?
March 19, 2013
1. What is mass? What is gravity? What is
weight?
2. How could you change your weight, while
staying on Earth?
3. How and why does your weight change on
different planets?
March 19, 2013
Q. Would I weigh the same at sea level
as I do at higher altitudes? source: New York Times
A. You would weigh very slightly more at sea level than at the top of a
mountain, not enough for you to notice, but a measurable amount.
Weight, which really means gravitational force, is proportional to the
product of the masses of two objects acting on each other, in this case the
giant earth and the tiny you. If the earth were a perfect sphere, with a
uniform mass throughout, and you were standing upright exactly at the
surface, all the mass within the radius of the circle on which you stand
would exert a gravitational force on you and contribute to your weight.
However, distance is a factor, too. The more distance you put between
yourself and the bulk of the mass of the earth, the less gravitational force it
exerts on your body.
By one estimate, a person who weighs 150 pounds on the surface of the
earth would weigh approximately 149.92 pounds at 10,000 feet above sea
level.
March 19, 2013
The force of gravity is affected
by mass and distance.
March 19, 2013
1. What is mass? What is gravity? What is
weight?
2. How could you change your weight, while
staying on Earth?
3. How and why does your weight change on
different planets?
March 19, 2013
We know different planets have
different gravities....but why?
March 19, 2013
Turn to Page 84
Work with your partner to complete How
Much Would You Weigh on Other
Planets.
March 19, 2013
Science Thursday
3/21/13
Warm-up
Planet Gravity Interactive
Assignment:
Interactive Worksheet
due: Friday
March 19, 2013
Which of these people do you agree with? Why?
What would you say to those you disagree with?
Susan said, "If I increase my mass, I will weigh
more on the moon than I do now."
Bobby said, "Changing mass has the same
effect as changing gravity because your weight
will change either way."
Julie said, "Mrs. Olson is the BEST! ...and when
you go to the moon your weight changes
because your distance from Earth is farther."
Bart said, "If the moon were bigger and farther
away, it would definitely pull harder on Earth."
March 19, 2013
March 19, 2013
Science Friday
3/21/13
Moon Travel Presentation
-Melissa, Tim, Sam, Danny
Test Prep Practice
Assignment:
Test Next Thursday
Enjoy your BREAK!
March 19, 2013
TOPICS FOR SHORT ANSWER TEST QUESTIONS
Space Technology - Benefits and Limitations
Seasons
Models to Show Space Concepts - Benefits and
Limitations
Gravity as it relates to Earth, Sun and Moon relationships.
March 19, 2013
In class we studied the relationship between mass, weight and gravity.
What is mass? What is weight? How does gravity affect mass and
weight? Explain how you'd predict your weight on a different planet?
*What is mass?
*What is weight?
*How does gravity affect mass and weight?
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*Explain how you'd predict your weight on a different planet?
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