Pacific Plate

High school (ages 12+)
Geography

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/pacific-plate

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How big is Pacific Plate?Approximately 103 million square kilometers (largest tectonic plate)
2. What is the location?Predominantly beneath the Pacific Ocean, extending to continental margins
3. What is the age of oldest crust?Jurassic period (approximately 175 million years old)
4. Why does the Pacific Plate cause so many earthquakes and volcanoes?When the Pacific Plate slides under other plates, it creates subduction zones that form the Ring of Fire. This area produces about 90% of the world’s earthquakes and 75% of its active volcanoes.
5. How does the Pacific Plate move and why does it move?The plate moves 2.5 to 10 centimeters each year, driven by heat from the mantle and the pull of sinking plates. Its speed varies across its surface, causing different stresses along its edges.

Lithosphere: The rigid outer part of the Earth, consisting of the crust and upper mantle.
Mantle Convection: The slow churning of Earth's mantle, driving plate movement.
Hotspot Volcanism: Volcanic activity caused by a plume of hot material rising from deep within the Earth's mantle.
Seafloor Spreading: The formation of new oceanic crust at mid-ocean ridges.