Exploring Landform Changes: Grand Canyon Evidence
Delve into the changing landscape of the Grand Canyon through gathered evidence like its deepening, soil deposition by the Colorado River, and the slow filling of Lake Mead. Engage in critical thinking about landform transformations based on observed clues.
Uploaded on | 0 Views
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
EARTHS CHANGING SURFACE LESSON 3B Do Landforms Ever Change? What Evidence Do We Have?
Our Evidence So far we ve gathered two important pieces of evidence (clues) to help us think about whether the Grand Canyon is changing. 1. The Grand Canyon is 2 centimeters deeper than it was 50 years ago. 2. The Colorado River carries loose soil and rocks with it as it flows through the canyon.
Todays Focus Questions Today we ll continue thinking about our focus questions from last time: Do landforms ever change? What evidence do we have? What do you think so far?
Our Virtual Trip to the Grand Canyon What do you notice about this picture now? Do you see anything new that you didn t notice last time? Photo courtesy of NPS.gov
Our Virtual Trip to the Grand Canyon Let s continue our exploration of the Grand Canyon! Photo courtesy of NPS.gov
Is the Grand Canyon Changing? Work with an elbow partner to answer question 2 on the handout. Use this sentence starter: We think the Grand Canyon [is/is not] changing because _______________. Make sure to include evidence from our three clues in your explanation.
Is the Grand Canyon Changing? Answer question 3 on your handout using this sentence starter: I think _________________ is causing the Grand Canyon to change. For now, just write down your ideas based on our clues. In our next lesson, we ll gather some evidence to help us answer this question.
Our Focus Questions Do landforms ever change? What evidence do we have? How would you answer the first focus question now? Think about all of the evidence we gathered during our trip to the Grand Canyon!
Key Science Ideas The Grand Canyon is 2 centimeters deeper than it was 50 years ago. The Colorado River carries loose soil and rock with it as it flows through the canyon. The soil and rock from the canyon are carried to Lake Mead and are slowly filling up the lake.
Lets Summarize! Based on our evidence, do we all agree with these conclusions? Landforms like the Grand Canyon and Lake Mead can change over time. These changes can happen very slowly.
Next Time We know that landforms like the Grand Canyon can change, but what causes them to change? We ll investigate this next time!
