1 / 13

# CRCT Question - PowerPoint PPT Presentation

CRCT Question. Happy Tuesday!. What percent of the Earth is water? 97% 50% 85% 70%. Fred the Fis h. Table: 10 points Cartoon: 40 Points Paragraph: 50 Points Introduction: Should say #1 pollution problem in Gwinnett

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Happy Tuesday!

What percent of the Earth is water?

97%

50%

85%

70%

• Table: 10 points

• Cartoon: 40 Points

• Paragraph: 50 Points

• Introduction: Should say #1 pollution problem in Gwinnett

• Paragraphs: Complete sentences. No symbols such as “=.” Reasons why you choose #1 pollution problem. Why you didn’t choose the other problems

• Conclusion: Restate your pollution problem and use a good closing topic

I will give you 30 minutes to finish the test (if needed)

Place in front bin when you are done

Silently read until everyone is done 

You pick the three activities you want to do.

They can be across, diagonal, or up and down.

To help you with time management, I’ve listed the dates for each activity.

I will give you guidelines for each activity as we go

### Ocean Properties

For each of the following determine whether you agree or disagree.

70% of the Earth is covered by water.

NaCl is the most abundant element in ocean water.

Gases in the water do not vary with depth.

The sun is the major source of heat for the ocean.

Warm water is more dense than cold water.

Salty water is less dense than fresh water.

Surface water is usually warmer than deep water.

For every 1000 grams of ocean water, 35 of those grams are salt.

Three sources of salt are – wind, waves, and water.

Salt water wants to sink below fresh water.

Oceans Properties

70% of the Earth is covered by water.

97% of the Earth’s water is in oceans.

The sun plays a key role in the water cycle.

Ocean water is about 96% pure water or H₂O. The most abundant elements in ocean water are hydrogen (H) and oxygen (O). The other 2 most abundant elements are chlorine and sodium.

Oceanographers are scientists who study the ocean.

Solids in Ocean Water

• Sodium Chloride (NaCl) is the most abundant salt.

• Salinity is the amount of dissolved salts in ocean water

• Three sources of salt are – Volcanic activity, waves, and erosion

• For every 1000 grams of ocean water, 35 of those grams are salt (3.4% of mass). This means that 100 pounds of ocean water would contain 3.5 pounds of salt.

• Why is the ocean salty? Water that moves across the earth dissolves the salt and carries it to the ocean. When water evaporates from the ocean, it leaves the salt behind.

• Most abundant gases in the ocean are nitrogen, carbon dioxide, and oxygen.

• Gases vary with depth, more are at the surface.

Sun is the major source of heat for the ocean.

Warm water is less dense than cold water.

As you go deeper, the temperature drops.

Surface water is usually warmer than deep water

Pressure of the water increases with depth because more water is on top.

Salty water is more dense than fresh water. That means that salty water wants to sink below fresh water.

Cold water is more dense than warm water. That means that cold water wants to sink below warm water.

These properties cause water to want to move around. This affects currents.