Age of the Earth Review

How old is a bone if it presently has 0.375 g of C-14, but was estimated to originally have had 80.0 g of C-14?  (The half life of C-14 is 5,730 years)

• 4.8 billion years
• 56,430 years
• 40,110 years
• 45,840 years

What is the half-life of an isotope if a 500 g sample decays to 62.5 g in 24.3 hours?

• 4.2
• 8.1
• 16.8
• 28.5

The half life of an isotope is 2.0 years.  How many years would it take for a 4.0 g sample to decay and have only .5 g remain?

• 2 years
• 4 years
• 6 years
• 8 years

Which best describes the relationship between the amount of oxygen in Earth's atmosphere and the diversity of life on Earth?

• Oxygen has no connection to the diversity of life.
• Less oxygen = more diversity.
• More oxygen = more diversity.
• Oxygen Schmoxygen.

Which layer is the oldest?

• A
• B
• C
• D

Tags

NGSS.MS-ESS1-4

Which type of evidence is considered direct?

• Fossil Layer
• Half-life
• Comparitive anatomy
• Vestigial structures

Everything had to happen correctly in order for life to form as it did.  Identify which "lucky break" we didn't discuss in class.

• All species are exactly the same as they were when they were created.
• Nitrogen bases got stuck in clays near lipids.
• RNA makes lots of mistakes when making copies.
• Energy was introduced at exactly the right moment.

The evidence suggests that the genetic material of the first organism was most likely:

• DNA
• Protein
• Lipid
• RNA

Mass extinctions are followed by an rapid increase in:

• Biodiversity
• Mutualism
• Meiosis
• Homeostasis

The formation of the first cell appears to be a result of which field of science?

• Biology
• Chemistry
• Physics
• Paleontology