Transcript Students will understand that stars have different sizes

S2E1
Students will understand that
stars have different sizes,
brightness, and patterns.
a. Describe the physical attributes of stars - size,
brightness, and patterns.
Star Sizes
To demonstrate the size of the different
types of stars, use the following items:
supergiant- represented by a soccer ball
super - represented by a tennis ball
medium (our sun) - represented by a ping
pong ball
dwarf - represented by a marble
Brightness
Students will learn that there are two
factors that affect a star’s apparent
brightness:
the energy that it has and the
distance that the star is from the
viewer.
To gain a better understanding of this idea,
complete the following demonstration:
Materials: two light sources of varying strength
(i.e., spotlight and flashlight)
1. Have two student volunteers stand next to each other
with the both lights on.
2. Which brighter (the spotlight) and why (the amount of
energy is has)?
3. Have the student with the spotlight move backwards
a considerable distance (down a hallway) and the
student with the flashlight move up to the viewer.
4. Which seems brighter now (the flashlight) and why
(because it is so close)?
Patterns
Draw a random arrangement of eight to ten
dots on the chalkboard.
Students should imagine that these are stars in
the sky and that they form some sort of
picture.
Call on a student to connect the dots with lines,
thereby showing the object he/she is
imagining.
Have the class create a story about their
imaginary objects.