GSS

Question 1

How many millions equal one billion?

Answer 1

1000

Question 2

A scientist claims to have found a fossil that is more than 6 billion years old. Why is the scientist’s claim false?

Answer 2

Fossils disintegrate after 10,000 years.

Question 3

Approximately when did eukaryotes first form?

Answer 3

2 billion years ago

Question 4

Prokaryotes are unicellular organisms that do not contain ________.

Answer 4

a nucleus

Question 5

Put the events in order from most recent (1), to oldest (5):

Answer 5

you know this one

Question 6

What event likely led to the extinction of non-avian dinosaurs?

Answer 6

A massive asteroid struck Earth.

Question 7

Put the fossils in order from most recent to least, or newest to oldest

Answer 7

AM
AR
J
C
S

Question 8

A scientist discovers an organism living deep beneath the Earth’s surface. This organism thrives despite intense pressure, heat, lack of water, and sunlight. This organism is probably a(n)

Answer 8

best guess

Question 9

The Earth is approximately ___________ old.

Answer 9

4,500,000

Question 10

Which statement best summarizes the source of most of the oxygen present in the atmosphere?

Answer 10

Cyanobacteria produced and emitted oxygen as a waste product of photosynthesis.

Question 11

Which of these is written in the correct order of appearance on Earth (from earliest to most recent)?

Answer 11

prokaryotes; photosynthesizers; eukaryotes; multicellular life

this is the one with the odd names

Question 12

What condition of early Earth would have been critical to the development of photosynthesis?

Answer 12

an atmosphere that allowed sunlight in