Friday, February 27
1. Turn in your Matter Storyboard and your Vocab Poster.
Remember, your Study Guide is due Monday (at the
BEGINNING of class).
2. Take out your Science Notebook and a pen or pencil for
today.
3. Answer these review questions in your Science notebook:
a) List 4 examples of different properties
of matter.
b) Classify each property you listed as one of
the two types of properties.
c) Why do you think Scientists classify
knowledge?
d) What is another example of something
Scientists classify?
Circle Activity Instructions
These are in the bin at your table.
You have about 4 minutes.
*Reminders:
work together
everyone helps sort
rotate turns writing on the white board
only work with your team
What are the 3 ways you classified the circles?
• Color
• Size
• Number
What do you think the circles
represented?
Stars
In your Science notebook, write the title “Star
Properties”.
Copy the following classifications from the
circle activity in your Science Notebook,
then infer which star property each
represented:
Star Properties
1. Color = _______________
2. Size = ________________
3. Number = _____________
Properties of Stars
Astronomers classify stars
by their color, size, and
brightness.
Other properties of stars
are chemical composition
and mass.
Color = Temperature – a stars
color indicates the temperature of
its’surface.
The hottest stars appear ______.
The cooler stars appear ______.
The spectrum of color in a star is
from blues to greens to yellows
and reds.
Size = Age
Think: What do
you think happens
to the size of stars
as they get older?
-----------------------
Pair Share
Answer: Start
with Seat A
Video:
http://www.youtube.com/watch?v=PM9CQDlQI
0A
1. What did you learn about star size?
2. How does this clip relate to what
else we have been learning?
Number = Amount of Brightness
• The brightness of a star as viewed
from Earth is dependent on many
factors such as color intensity and
distance.
• Apparent Magnitude/Brightness:
the brightness of a star as it
appears from Earth.
• The apparent
magnitude/brightness decreases as
its distance from you increases
• Absolute Magnitude/Brightness or
Luminosity
how bright a star really is.
Which of these new
words mean the same
thing?
Hertzsprung-Russell Diagram (H-R Diagram)
To Do
Complete the Review Worksheet. Do the 2nd
part FIRST (the HR Diagram that classifies
stars).
Work on study guide or extra credit when
finished.