Transcript Space Science

Unit 2’s Concepts
∙ Scientists use models to help understand and
explain how things work.
∙ Space scientists use models to study things
that are very big or far away.
∙Models help us make and test predictions.
∙ All models are inaccurate in some way.
∙ A model can be an explanation in your mind.
∙ Two-dimensional (2-D) models show the
dimensions of height and width. (ex: a
picture)
∙ Three-dimensional (3-D) models show the
dimensions of height, width, and depth.
Note: Don’t move on to new slide
till after we measure albatross
Lesson 1.4
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3,000km, 30,000km
Hand out worksheet
4cm=_______mm
2m=________cm
50m=_______cm
http://www.neok12.co
m/php/watch.php?v=zX
550d524f044b75537d06
41&t=Space-Exploration
Now we
know…..
Over 1
hundred
Earths fit
across the
Sun.
The
Is only about onefourth the size of the
In diameter,
so the
is much bigger than
the Moon.
A little preview…
Write new number order on the back
of the cards in a different color? Don’t
erase old order numbers.
Actual sizes of the ten objectsHouse = 25 Meters long
Person A = 1 Meter tall
Person B = 1 Meter 70 cm tall
Moon = 3500 km diameters
Ball = 60 cm
Star A : Betelgeuse = 900,000,000 km
diameter
Star B: Sirius B = 12,000 km diameter
Star C: Rigel = 84,000,000 km
diameter
Venus = 12,1000 km diameter
Car = 25 cm long
How big something looks and how big
it really is can be very different.
An object looks bigger when it’s closer.
An object looks smaller when it’s father
away
The Sun looks bigger than other start
because it’s a whole lot closer.
The Sun looks the same size as the
Moon because it’s much farther away
than the Moon.
Light years away video
http://player.discoveryeducat
ion.com/index.cfm?guidAsset
Id=770EB2BC-DA26-476CA45AE2F8D74DA3FF&blnFromSea
rch=1&productcode=US
With your group, cut out
these cards. Divide the cards evenly.
Use the category
cards to sort the
sky objects.
.
Now Scientist, I’ve
come across some new
evidence. As I read the
new evidence, take
notes so you will be
able to resort your
cards. (see pages 180186)
Pass out
Visual Chart
of the Sizes
of the
Planets
.
Concept:
There are many
things in the
Universe that are
much larger than
the Sun.
How far away are
the clouds?
-top of the
tallest mountain?
-the beginning of
space?