The mysterious origins of life on Earth
Interactive Video
•
Geography
•
6th Grade
•
Hard
Emma Maltz
FREE Resource
9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What were the conditions on early Earth that made it unsuitable for living things?
Widespread volcanic activity and an atmosphere with hostile conditions.
A completely frozen surface and lack of liquid water.
An abundance of oxygen and extreme cold.
Frequent meteor showers and a very thin atmosphere.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a basic necessity for life forms to grow and reproduce?
A liquid solvent like water.
A source of energy.
Complex organic compounds.
Elements like hydrogen, nitrogen, and phosphate.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Given the harsh conditions on early Earth, what was the most likely energy source for the first autotrophic life forms?
Consuming other organisms.
Sunlight on the Earth's surface.
Chemical gradients from hydrothermal vents.
Volcanic eruptions.
4.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
A hydrothermal vent is a ------ in the Earth's crust where seawater seeps into magma chambers and is ejected out at high temperatures.
(a)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does LUCA stand for?
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
What are the key features of black smokers?
High-temperature water emissions
Acidic, carbon-dioxide-rich water
Rich minerals such as sulphur, iron and copper
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of hydrothermal vent is now considered the most favorable candidate for the origin of life, and why?
White smokers, because they release highly alkaline water, are rich in methane, and have more hospitable temperatures.
Black smokers, because they release acidic, carbon dioxide-rich water at very high temperatures.
Black smokers, because they are packed with essential metals like sulfur, iron, and copper.
White smokers, because they are found exclusively on the Mid-Atlantic Ridge.
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