Geology CKLA Lesson 13 Under the Sea

Lesson's focus:

RI.4.1 Refer to details and examples in a text when explaining what the text says explicitly and when drawing inferences from the text.

RI.4.2 Determine the main idea of a text and explain how it is supported by key details; summarize the text.
Materials needed- Geology Reader; Reading Notebook

Open Ended

Review: Write 1 way mountains are created from yesterday's lesson.

Submersible-

n. a small vehicle that can travel deep under water for research

rugged (adj.) - having a rough, uneven surface

hydrothermal vent (n) - a deep-sea geyser that forms as seawater sinks down through cracks in the oceanic crust and then releases extremely hot, mineral-rich water back up through cracks in the crust

seamount (n)- an underwater volcano that forms wherever magma is erupting through oceanic crust (seamounts) (87)

Let's read p.82 and 83 in your Geology book.

Multiple Choice

According to p. 83, why is seafloor spreading important to geology?

• There are more mountains on the seafloor than on all of Earth’s continents and islands combined.

• Because it does NOT prove Wegener’s theory of continental drift is correct.

  
  

• Because it proves that Wegener’s theory of continental drift is correct and that the continents did not break apart suddenly, but in a slow process that took thousands of years.

  
  

• Because geologists want to vacation there and are afraid the sea floor will open up and swallow them.

Let's read p. 84 in your Geology book.

Multiple Choice

Look at the map on p. 84. What do the red lines represent?

• mid-ocean ridges

• plate boundaries

• volcanoes

• pretty little red chains

Let's read p. 85 and 86 in your Geology book.

Drag and Drop

Based on p. 85, ​

Placeholder

vents are deep-sea​

Placeholder

but much ​

Placeholder

than any geysers found on land. Hydrothermal vents form as ​

Placeholder

sinks down through cracks in the oceanic ​

Placeholder

Drag these tiles and drop them in the correct blank above

geysers

hotter

seawater

crust

mountain

blasting

particles

hydrothermal

Let's read p.87 in your Geology book.

Multiple Choice

Which paragraph on p. 87 proves that seamounts are difficult to study because of their location?

• 1

• 2

• 3

• 4

Let's read p.88 and 89 in your Geology book.

Multiple Choice

What is the main idea of the section titled, "Into the Trenches"?

• The Mariana Trench is cool to explore.

• The Mariana Trench is the only Ocean Trench in the world and is difficult to explore.

• Ocean trenches are extremely hot environments with many animals living there.

• Ocean trenches are valleys in the deepest parts of the ocean. The Mariana Trench is one of the most famous ones and is difficult to explore because of its depth.

Multiple Choice

Why have only 3 people traveled to the Mariana Trench?

• Because geologists do not find it interesting.

• Because of the extreme pressure, cold, and the depth.

• Because it is impossible with the technology that we currently have.

• Because it is creepy.

Multiple Choice

"As of 2014, people have traveled to the bottom of the Mariana Trench only twice. The first expedition took place in 1960." What does the word expedition mean?

• party

• submersible

• dig

• trip