Youtube Exercise » English Grammar Homework

B1-B2

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

Peekaboo Kidz

4.2M views 5 years ago

Warm-up Questions

Have you ever tasted ocean water? What did it taste like?
Why do you think ocean water is salty?
What do you already know about where salt might come from?

Up Next

Would you sacrifice one person to save five? – Eleanor Nelsen TED-Ed
Movie Genres Explained — Types of Films & the Art of Subverting Film Genres StudioBinder
What Is International Women's Day? ClickView
Baby Tips for a New Dad, from a Dad from Sanford Health Sanford Health
Mummy Pig's PREGNANCY Announcement | Peppa Pig Tales | BRAND NEW | Peppa Pig Playground Peppa Pig Playground

Start With: Word Definition

Order: Alphabetical Random

…

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

The mystery: how salty is the ocean? (00:00 – 01:39)

Transcript will load here…

1. What is the main question the episode wants to answer?

Why ocean water is cold
Why ocean water is salty
Why rain is acidic
Why ocean animals are dangerous

2. According to the video, oceans cover about what percent of Earth's surface?

3. What does the speaker say is the 'vital question' after describing ocean saltiness?

Where did all the salts come from?
How do fish survive in salt water?
Why is rain water fresh?
How deep is the ocean?

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

Source 1: runoff, rain, and rocks (01:39 – 02:40)

Transcript will load here…

1. As rain moves through the air, what does it collect that makes it slightly acidic?

Carbon dioxide
Oxygen
Sand
Salt crystals

2. What happens when the slightly acidic water meets the land surface?

It freezes immediately
It becomes completely salt-free
It evaporates quickly
It erodes rocks and picks up dissolved minerals

3. After rainwater reaches the ocean, which statement matches the video?

All dissolved minerals disappear instantly
Organisms extract some minerals like calcium, but salt tends to remain
Salt is only added by humans
Salt is extracted by organisms, but calcium remains

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

Source 2: seafloor openings, plus lakes vs oceans and a final reminder (02:40 – 04:58)

Transcript will load here…

1. What is the second main source of salt mentioned besides runoff from land?

Whales and dolphins
Melting icebergs
Openings in the sea floor (hydrothermal fluids)
Clouds above the ocean

2. Why aren’t lakes and rivers usually salty, according to the video?

They are too cold for salt to form
They never contain any salt
They are continually flowing so salt doesn’t accumulate
They are filtered by ocean plants

3. Which two minerals are described as the most common in sea water?

Iron and copper
Magnesium and oxygen
Chloride and sodium
Calcium and zinc

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

Transcript will load here…

1. Which best summarizes the video’s explanation for why the ocean is salty?

Salt mainly comes from land runoff and from openings in the sea floor
Salt is created when sunlight hits the water
Salt mainly comes from ice melting into the ocean
Salt only comes from animals in the ocean

2. In the video, what is one reason ocean water becomes undrinkable?

It has no minerals at all
It is always boiling hot
It contains too much oxygen
Salt tends to remain while some other minerals are extracted

3. What action does the speaker suggest viewers should take?

Add more salt to rivers
Avoid learning about science
Stop all rain from falling
Keep oceans clean and free from pollution

Discussion Questions

Discuss the ideas from this video

Why Is Ocean Water Salty? | Earth's Ocean | Dr Binocs Show | Peekaboo Kidz

Which source of ocean salt (runoff from land or seafloor openings) seems more important to you? Why?
What are some ways humans can reduce ocean pollution in daily life?
If lakes and rivers kept collecting salt without flowing out, how might that change ecosystems?
What other “everyday mysteries” (like why the sky is blue) would you like a short science video to explain?