#### Transcript (daughter isotopes) 0

```Solar System Travel Brochure
A: Tell what the brochure is about.
How do you convert kilometers to Astronomical Units?
B. Distance from the sun in KM and Astronomical Units
If a planet is 300 million kilometers from earth, how many
Astronomical Units is the planet from earth?
300 million km
300 million km
kilometers
E. Length of your objects year:
12 years
Source:
http://www.universetoday.com/15085/how-long-is-a-year-on-jupiter/
Drop height vs crater depth for two balls of unequal density
Drop Height in centimeters
100
50
25
10
5
0
1
2
3
4
5
6
7
Crater depth in millimeters
8
9
10
Half Life Decay Curve
Fraction, percent & decimal of
parents and daughters table.
Half
Life
0
# parents
# daughters
1
100%
1.0
0
0%
0
1
½
50%
0.5
½
50%
0.5
2
¼
25%
0.25
¾
75%
0.75
3
1/8 12.5%
0.125
7/8 87.5% 0.875
4
1/16 6.25% 0.0625 15/16 93.75% 0.9375
5
1/32 3.0%
0.03
31/32
97% 0.97
63/64
98.4% 0.984
Steps to determine the half life and
age of the rock:
1. Add the number of parent atoms and
daughter atoms together.
2. Make a ratio of the parent atoms to the
total number of atoms.
3. Look on the half life graph and match the
parent ratio to the number of half lives.
4. Multiply the number of half lives by the
amount of time in 1 half life.
A rock sample has 8 parent isotopes and 8
daughter isotopes. How many years old is
the sample? (1 half life = 16 years)
A rock sample has 4 parent isotopes and
12 daughter isotopes. How many years old
is the sample? (1 half life = 20 years)
A rock sample has 12 parent isotopes and
0 daughter isotopes. How many years old
is the sample? (1 half life = 70 years)
A rock sample has 3 parent isotopes and 9
daughter isotopes. How many years old is
the sample? (1 half life = 71 years)
A rock sample has 10 parent isotopes and
10 daughter isotopes. The half life of the
radioactive element is 50 years. How old is
the rock in years?
1. Add the number of parent atoms and
daughter atoms together.
2. Make a ratio of the parent atoms to the total
number of atoms.
3. Look on the half life graph and match the
parent ratio to the number of half lives.
4. Multiply the number of half lives by the
number of years in 1 half life.
A rock sample has 800 parent isotopes and
0 daughter isotopes. The half life of the
radioactive element is 5000 years. How old
is the rock?
1. Add the number of parent atoms and
daughter atoms together.
2. Make a ratio of the parent atoms to the total
number of atoms.
3. Look on the half life graph and match the
parent ratio to the number of half lives.
4. Multiply the number of half lives by the
number of years in 1 half life.
A rock sample has 15 parent isotopes and
105 daughter isotopes. The half life of the
radioactive element is 100 years. How old
is the rock?
1. Add the number of parent atoms and
daughter atoms together.
2. Make a ratio of the parent atoms to the total
number of atoms.
3. Look on the half life graph and match the
parent ratio to the number of half lives.
4. Multiply the number of half lives by the
number of years in 1 half life.
A rock sample has 15 parent isotopes and
105 daughter isotopes. The half life of the
radioactive element is 100 years. How old
is the rock?
1. Add the number of parent atoms and
daughter atoms together.
2. Make a ratio of the parent atoms to the total
number of atoms.
3. Look on the half life graph and match the
parent ratio to the number of half lives.
4. Multiply the number of half lives by the
number of years in 1 half life.
Simplify these fractions then
determine the number of half
lives each represents.
4
8
10
20
10
160
500
1000
250
1000
50
800
Fill in this table for a rock that has a half life of 1 million years.
Half
Life
Fraction of Parents Time in years
How many years old is rock that has 25g of parent isotopes
and 75g of daughter isotopes and the half life is 1 million years.
Half
Life
0
Fraction of Parents Time in
years
1
0
Mass in
grams of
parents
100
Half Life
Black side up circles
(parent isotopes)
White side up circles in
paper cup (daughter
isotopes)
0
200 in glass beaker to
start
0 in paper cup to
start
1
2
3
4
5
6
7
8
9
Nuclear fusion is how stars make
energy.
• A Hydrogen atom is combined with
another hydrogen atom to make helium.
Nuclear Fusion
Hydrogen
Hydrogen
Nuclear Fusion
When the sun or another star fuses atoms, it is
creating new elements.
The creation of new elements is known as
nucleosynthesis.
Nucleosynthesis Video
Formation
of elements
in stars.
nucleosynthesis video clip
Two main gases in the sun are hydrogen and helium
Spectroscopy – study of light used
to determine the components of
stars.
Sun video
Nuclear fusion
Fusing atoms
Fusion creates new elements
Vocabulary due February 23
1.
2.
3.
4.
5.
6.
Nuclear Fusion
Star
Planet
Light Year
Nucleosynthesis
Electromagnetic
Spectrum
7. Spectroscopy
(picture & definition)
8. Optical telescope
10. Stromatolite
Speed of Light
Light travels 300,000 km in one second
Light travels 9.5 trillion km in one year.
A light year is the distance light travels in
one year, or 9.5 trillion km.
Solar System Travel Brochure:
How to calculate the amount of time it will
take light from the sun to reach your
object.
Time = Distance divided by Speed
D. Find the distance from the sun to your
object in kilometers.
1. Divide that distance by 300,000 km per
500 seconds divided by 60 seconds per minute = 8.3 minutes
C. To determine the amount of time it will
take a rocket traveling 50,000 km per hour:
1. Determine the distance from the
sun to your planet in km.
2. Subtract 150 million km because
the Earth is 1 AU from the sun.
3. Divide the distance by 50,000 km
to get hours
4. Divide that # by 24 to get days and
that # by 365 to get years.
Determine how many hours it will take a
rocket to travel 400,000 km to the moon if the
rocket speed = 50,000 km per hour.
Determine how many hours it will take a
rocket to get to travel 400,000 km to the moon
if the rocket speed = 50,000 km per hour.
Determine how many seconds it takes for
sunlight reflected off the moon to travel
400,000 km to Earth the speed of light =
300,000 km per second.
Determine how many seconds it takes for
sunlight reflected off the moon to travel
400,000 km to Earth the speed of light =
300,000 km per second.
Intrinsic properties – physical characteristics
that do not depend on the amount of material
you have. (Color, viscosity, temperature and
density)
Radioactivity and mass are not an intrinsic
property. The bigger the rock, the more
radioactivity is produces, the heavier it weighs.
The density of gold is the same no matter the
size of the gold.
Density Animation
Using a graduated cylinder to determine
density
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