Water Origins and Isotopic Analysis

Water Origins and Isotopic Analysis

Assessment

Interactive Video

Science, Chemistry, Geography

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video explores the origins of Earth's water, initially believed to be delivered by meteorites. It discusses isotopes like deuterium and hydrogen, comparing Earth and comet water. New research suggests Earth's water may have been present from the start, challenging previous theories. This has implications for other planets, including Mars, which may have had water from the beginning. The video concludes with a call for further research to understand these complex questions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the initial hypothesis about how Earth's water arrived?

It was created by living organisms.

It was formed by volcanic activity.

It was delivered by meteorites.

It was always present on Earth.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is deuterium?

A form of oxygen.

A heavy isotope of hydrogen.

A type of meteorite.

A type of volcanic rock.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the presence of deuterium in water help scientists understand?

The composition of meteorites.

The age of the Earth.

The origins of Earth's water.

The temperature of the early Earth.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the isotopic ratio of deuterium to hydrogen?

It shows the temperature of water.

It reveals the source of water.

It indicates the presence of life.

It helps date the age of water.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Lydia Halas's study focus on?

The evaporation of water into space.

Water trapped in volcanic glass.

The role of comets in delivering water.

The isotopic composition of ocean water.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was a key finding from the study of water trapped in volcanic glass?

It was lighter than ocean water.

It contained no deuterium.

It was heavier than ocean water.

It was identical to comet water.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Halas's findings suggest about the origin of Earth's water?

It was created by living organisms.

It was formed by volcanic activity.

It was present from the beginning.

It was delivered by comets.

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