Activity 26 - Finding the Expansion Rate and Age of

Activity 26: Finding the Expansion Rate and the
Age of the Universe
©2014 W.W.Norton &Company, Inc.
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Post-26.1: Edwin Hubble came up with a slope of
500 km/s/Mpc when he first graphed his measurements.
What was the age of the universe based on that value?
a.
b.
c.
d.
2 billion years old
13.8 billion years old
6,000 years old
210,000 years old
©2014 W.W.Norton &Company, Inc.
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Post-26.1: Edwin Hubble came up with a slope of
500 km/s/Mpc when he first graphed his measurements.
What was the age of the universe based on that value?
a.
b.
c.
d.
2 billion years old
13.8 billion years old
6,000 years old
210,000 years old
©2014 W.W.Norton &Company, Inc.
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Post-26.2: Around 1975 there was a definite dichotomy
in the accepted value for the Hubble constant (Ho): 100
km/s/Mpc versus 50 km/s/Mpc. What would be the
implied age of the universe for Ho = 100 km/s/Mpc?
a.
b.
c.
d.
2.5 billion years
5 billion years
10 billion years
20 billion years
©2014 W.W.Norton &Company, Inc.
12
Post-26.2: Around 1975 there was a definite dichotomy
in the accepted value for the Hubble constant (Ho): 100
km/s/Mpc versus 50 km/s/Mpc. What would be the
implied age of the universe for Ho = 100 km/s/Mpc?
a.
b.
c.
d.
2.5 billion years
5 billion years
10 billion years
20 billion years
©2014 W.W.Norton &Company, Inc.
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Post-26.3: If the universe were not expanding, which of
the graphs show here would represent that fact?
a.
b.
c.
d.
graph (a): y = mx + b
graph (b): y = -mx + b
graph (c): y = constant
none of these
©2014 W.W.Norton &Company, Inc.
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Post-26.3: If the universe were not expanding, which of
the graphs show here would represent that fact?
a.
b.
c.
d.
graph (a): y = mx + b
graph (b): y = -mx + b
graph (c): y = constant
none of these
©2014 W.W.Norton &Company, Inc.
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This concludes Activity 26: Finding the
Expansion Rate and the Age of the Universe
©2014 W.W.Norton &Company, Inc.
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