The Grand Canyon is one of the United State’s best examples of erosion. Wind, rain, and the Colorado River slowly created it. These forces cut and shaped the area into what it is today. The Appalachian Mountains were a towering mountain range millions of years ago. Today their highest point is 6,684 feet tall. That same peak used to be an estimated 20,000 feet high. Erosion over time has worn the mountains down and changed them forever.

Which keywords or phrases from this text show that these events happened slowly?

The Grand Canyon is one of the United State’s best examples of erosion. Wind, rain, and the Colorado River slowly created it. These forces cut and shaped the area into what it is today. The Appalachian Mountains were a towering mountain range millions of years ago. Today their highest point is 6,684 feet tall. That same peak used to be an estimated 20,000 feet high. Erosion over time has worn the mountains down and changed them forever.

What conclusion can the reader make about the formation of mountains?

California had two significant events that took place today that shook residents up. The first was a sudden wildfire that struck the forested area outside of Los Angeles and terrified residents! It didn't rage for very long before firefighters put it out. A flick of a match is all it takes to start a massive fire. There were no injuries or deaths, luckily. The other event was a slippery mess. Northern California had been experiencing heavy rains for days, and because of years of erosion to cliffsides and roads, a terrible mudslide began. It is still ongoing, and there is no real way to stop it, it has to run its course. Unfortunately, when land is broken down over time, it becomes more dangerous in the case of prolonged rainstorms.

What are the keywords/phrases in this text that allude to an event that happens slowly?

Why is this photo an example of an event on Earth that happens slowly?

One of the slowest events on Earth that can change the shape of the land is erosion.

What does the term erosion mean? Example: The erosion of the beach left many homes at risk for collapse. The sand is still sliding and moving closer to the ocean.

Why is this photo an example of an event on Earth that happens slowly?

What is the definition of weathering? Example: Weathering is an important factor in the creation of new landforms.

Tsunamis are severe oceanic storms that cause extreme devastation. They are a series of waves that can be miles long, up to 100 feet high, and can travel at 400 miles per hour. They are caused by significant and sudden disturbances of the sea’s surface. Volcanic eruptions, landslides, earthquakes can trigger a tsunami. A massive wall of water will wash ashore, and there is very little time or warning for those who live in the communities nearby. The series of waves can last for hours, and massive flooding adds to the problem. If you find yourself in a tsunami, get to high ground, keep calm, do not drive, and follow instructions from local officials.

What words/phrases let readers know these are events that do NOT happen slowly?

Which photo shows an Earth event that happens slowly (in months or years)?

Erosion happens very slowly over time. It is the movement of broken rocks, dirt, and sediment caused by weathering. Which answer choice gives an example of erosion?