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Q 1/22
Score 0
In 1831, Darwin set sail on a scientific expedition on a ship called the HMS _____
30
Galapago's
tortoise
Wallace
Beagle
Q 2/22
Score 0
Darwin's most important observations were made on the _____ islands.
30
Galapagos
Beagle
Wallace
Tortoise
22 questions
Q.
In 1831, Darwin set sail on a scientific expedition on a ship called the HMS _____
1
30 sec
Q.
Darwin's most important observations were made on the _____ islands.
2
30 sec
Q.
Lamarck developed the idea known as the inheritance of _____ characteristics.
3
30 sec
Q.
The _____ Darwin found helped convince him that species change over time.
4
30 sec
Q.
The term _____ refers to an organism's ability to survive and produce fertile offspring.
5
30 sec
Q.
_____ paper on evolution confirmed Darwin's ideas.
6
30 sec
Q.
_____ said that Earth must be far older than most people believed.
7
30 sec
Q.
Darwin was influenced by his knowledge of artificial _____.
8
30 sec
Q.
Darwin proposed that _____ selects the variations in organisms that are most useful.
9
30 sec
Q.
The Galapagos Islands are known for having giant _____ with differently shaped shells.
10
30 sec
Q.
From Malthus, Darwin knew that populations could grow faster than their _____.
11
30 sec
Q.
Darwin's theory of evolution unifies all of _____.
12
30 sec
Q.
A sample originally had 160 grams of Carbon-14. After 11,460 years, only 10 grams of Carbon-14 remain. What is the half-life of Carbon-14?
13
30 sec
Q.
A scientist discovers that a sample of phosphorus-32 has decayed to 12.5% of its original amount. If the half-life of phosphorus-32 is 14.3 days, how old is the sample?
14
30 sec
Q.
A paleontologist finds a fossil and determines it contains 3.125% of its original carbon-14. The half-life of carbon-14 is 5730 years. How many half-lives have elapsed since the organism was alive?
15
30 sec
Q.
A geologist discovers a mineral sample that retains 50% of its original uranium-238. If the half-life of uranium-238 is 4.5 billion years, how old is the mineral?
16
30 sec
Q.
A scientist estimates that a rock contains 6.25% of its original potassium-40. Knowing the half-life of potassium-40 is 1.25 billion years, how old is the rock?
17
30 sec
Q.
An archaeologist measures the activity of a carbon-14 sample to be one-quarter of the original activity. If the half-life of carbon-14 is 5730 years, how long ago was the sample at its original activity level?
18
30 sec
Q.
A biologist finds a bone and determines it contains 12.5% of its original carbon-14. The half-life of carbon-14 is 5730 years. How old is the bone?
19
30 sec
Q.
A sample contains 25% of its original radioactive material. If the half-life of the material is 1000 years, how old is the sample?
20
30 sec
Q.
A sample contains 37.5% of its original strontium-90 content. If the half-life of strontium-90 is 28.8 years, how many years old is the sample?
21
30 sec
Q.
A rock sample is found to contain one-eighth of its original uranium-238. If the half-life of uranium-238 is 4.5 billion years, how old is the rock?
