Transcript Other Objects in Space

Today’s Agenda…
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Get clickers! 
Solar System Quiz
Notes on Objects in Space
Moon quiz retake tomorrow
Homework: Study Guide (Due on
Thursday)
Test/Study Packs on Friday
Objects in Space
Study Pack #11
Page 454 - 459
Today’s Goals…
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I can describe objects in our solar system.
Comets
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Made up of rock and ice
Travels around the sun
May come from the Oort Cloud (beyond
Pluto)
The tail is created when:
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Heat from the sun turns ice into gas
Solar winds blow the gases and dust away
form the comet
Comets
Haley’s
Comet
Hale Bopp - 1997
Meteorites
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Any fragments from space that land on Earth
Page 455 Figure 18
Important clues from space
Made of metal and rock
Hundreds fall to Earth each year!
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When is the next shower?
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Stars and Constellations
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Constellations are groups of stars that
form patterns
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Ursa major – “big dipper”
Ursa minor – “little dipper”
Page 456 Figure 19
Named after animals, objects, people
Different groups of people may have different
names
Starry Colors
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The color of a star can tell the temperature
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Red – coolest
Yellow – medium
Blue-white – hottest
Stars are also different sizes
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The sun is a medium sized yellow star
Betelgeuse
Apparent Magnitude
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Classifies how bright a star appears from
Earth
The smaller the number, the brighter the
star
Some stars may actually be brighter than
the sun, but the sun is closer to Earth so it
appears brighter
The Lives of Stars
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Clouds of gas and dust move closer
together
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Temperatures begin to rise
Atoms come together and change from
matter to energy
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This process is called fusion
The Lives of Stars
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Stars continue to change after they form
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Giant stars – large, cool, red
White dwarf star – hot, small star
Black dwarf – cool, stops shining
The more massive a star is the shorter
their life cycles
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Small stars shine longer
The Lives of Stars
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Stars can also be supergiants
When supergiants explode they become
supernovas
Page 459 Figure 22
The core of the supergiant collapses to
form a black hole
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Black holes have so much gravity, not even
light can escape!
What did you learn?
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Comets are made up of ice and dust.
Meteorites are any objects that fall to
Earth.
The sun is the largest kind of star.
All stars become supernovas.