Youtube Exercise » English Grammar Homework

Why water is really, really weird | BBC Ideas

BBC Ideas

181K views 7 years ago

Warm-up Questions

From the title, what do you think makes water “really, really weird”?
What are some everyday things you do with water that you rarely think about?
Do you think water is common in the universe, or rare? Why?

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Why water is really, really weird | BBC Ideas

Water’s ancient journey and alien origin (00:00 – 01:00)

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1. How long have water molecules on Earth existed, according to the speaker?

For millions of years
For billions of years
For thousands of years
Only since humans evolved

2. Which list includes places the water inside you may have been before?

Dinosaurs, bacteria, oceans, storm clouds, and polar ice caps
Only rivers and lakes
Only inside plants
Volcanoes, gold, and diamonds

3. Where did the speaker say Earth’s water arrived from?

It formed inside Earth’s core
It came from the Sun
It arrived on asteroids and comets from space
It was made by living things

Why water is really, really weird | BBC Ideas

Water breaks the rules: freezing, floating, and survival (01:00 – 01:55)

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1. According to the speaker, what do the “rules of chemistry” suggest water should be on Earth?

A gas
A metal
A solid
A plasma

2. What unusual thing happens when water freezes?

It becomes heavier and sinks
It expands, so ice floats on water
It disappears into the air
It turns into salt

3. How did floating ice help complex life survive, according to the video?

By heating the oceans from above
By stopping all plants from growing
By insulating the water underneath
By removing oxygen from the water

Why water is really, really weird | BBC Ideas

Capillary action, water in space, and why it matters (01:55 – 03:17)

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1. Why can water molecules move upward against gravity in tiny channels?

Because they are magnetic
Because they love to stick to each other
Because they turn into gas
Because they are pushed up by sunlight

2. What is the name of the process that helps plants move water upward?

Nuclear fusion
Capillary action
Photosynthesis
Solar heating

3. What does the speaker say about water in the universe?

It is the second most common molecule in the universe
It cannot exist on other planets
It is rarer than gold
It only exists on Earth

Why water is really, really weird | BBC Ideas

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1. What is the main purpose of the video?

To show that water has unusual properties that are important for life
To teach viewers how to find water on Mars
To explain why water is ordinary and easy to understand
To argue that water should be avoided because it is dangerous

2. Which idea is repeated throughout the video?

Water follows the normal rules of chemistry
Only scientists can use water correctly
Water’s unusual behavior has big consequences for life and planets
Water is not found in space

3. Which statement best matches the video’s overall message?

Life would be the same without water
Earth’s water was created recently
We exist partly because water behaves in surprising ways
Ice always sinks in water

Discussion Questions

Discuss the ideas from this video

Why water is really, really weird | BBC Ideas

Which fact in the video surprised you most, and why?
Do you think the idea that Earth’s water is “alien” changes how you think about the planet? Explain.
If ice sank instead of floating, how do you think oceans and life on Earth would be different?
The video says “where there’s water there could be life.” Do you agree? What other conditions might be necessary?