0
Upcoming SlideShare
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Standard text messaging rates apply

# Earthquakes!

238

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total Views
238
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
4
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Transcript

• 1. Earthquakes!<br />8SCIENCE Tues. April 5<br />
• 2. What is an earthquake?<br />Review:<br />Sections of the Earth’s crust (plates) move and cause rocks to bend and stretch <br />If there is enough force the rocks will break, release energy and cause vibrations <br /> = earthquake<br />
• 3. Where are these plates found?<br />These plates are made of Earth’s crust <br />Review layers of the Earth: animation<br />Crust<br />Mantle <br />Outer core<br />Inner core<br />
• 4. What is an earthquake?<br />Earth’s crust is in constant motion because of forces inside the earth <br />These cause sections of the crust (plates) to move which puts force on the plates<br />3 types of force:<br />Compression<br />Tension<br />Shear<br />
• 5. Forces form faults<br />Compression = force that pushes together  <br />Tension = force that pulls apart  <br />Shear = force that moves past the other ↑↓<br />These forces cause rocks to break and move along surfaces called faults<br />
• 6. Different Forces produce Different Faults<br />To see the above in motion:<br />When rocks are stretched they may break and an earthquake will result<br />When they break, energy is released along fault surfaces, also called an earthquake!<br />