Download The Solar System Up Close - St. John Paul II Collegiate

The Solar System Up Close
The best way to learn about planets and
their moons is to see them up close.
Spacecraft allow us to do this.
Read pages 409-410.
The sun orbits the galaxy once every 200
million years (a galactic year).
According to my calculations, the sun is
about 4.6 billion years old and will shine
for another 5 billion years. Then it will
swell to a red giant, lose its outer layers
to form a planetary nebula, and end its
life as a dwarf star.
Inner planets (Mercury, Venus, Earth and
Mars) all have a “rocky” composition.
Outer planets (Jupiter, Saturn, Uranus
and Neptune) are similar because they all
have a gaseous composition.
Read the planet card on pages 412-415.
Answer questions on page 411 #1-7.
Mars Colony – Challenges of Space
Exploration:
Break Earths gravity
Keep equipment operating in the
extreme environment that is known as
space.
Transport people safely
Environmental hazards
o Space is a vacuum
o Risk of being hit by debris or
meteoroids
o No air pressure
o Massive temperature variations
Psychological - long trips in a
confined living space
Body and microgravity –
gravitational force that act on mass
are reduced resulting in: loss of bone
mass and density. Heart doesn’t pump
as hard to circulate blood, which
decreases RBC production. Muscles
become weaker.
Space suit – self contained system
of air, water, heating, cooling, flexible
Water – needs to be recycled (can
only have a limited supply)
Life support – remove carbon
dioxide, produce oxygen, filter
microorganisms and dust from air.
Keep air pressure, temperature and
humidity stable.
Question:
What is the difference between a lunar
eclipse and a solar eclipse?
Can they be predicted?
Yes – via observation and mathematics.
Read pages 418-419
Page 419 #1-5