Explanation text

Floods

BY LAURA GOERTZEL

Rain is pouring hard and fast—more than eight inches in just an hour, turning river water brown with mud. Earthworms wiggle up to the ground as the soil becomes too wet for them. A flood might be coming.

Just about any place on Earth can experience flooding. When so much rain falls that the ground can’t absorb it or waterways can’t hold it, the overflowing water becomes a destructive force. In the United States, flooding causes more death and damage than tornadoes, hurricanes, or lightning.

How floods develop

During a rainstorm, precipitation—or the water that comes from rain or snow—goes to different places. Some of it flows into streams, lakes, or city water systems. Other precipitation evaporates and returns to the atmosphere.

But much of the rainwater is absorbed by soil. It flows through the top layer of the ground, to plant roots below the surface. This helps provides plants with the water and nutrients they need to grow. The excess water moves deeper into the ground through layers of dirt and rocks where until it becomes part of natural underground wells called groundwater.

A habitat can naturally absorb a healthy amount of rainfall it needs to thrive. But too much rain can cause lake and river levels to rise and overflow their banks, or the soil to become too wet to absorb more water. And though you might think extremely dry habitats would welcome too much rain, it turns out that the parched dirt can’t absorb the rain fast enough to capture it all.

Severe coastal storms, quickly melting ice and snow, and collapsed barriers (like concrete dams) can also cause floods. Even damaged beaver dams can lead to an overflow of water that the surrounding earth can’t absorb.

Different types of floods

Floods can form slowly over several days or overwhelm an area with little warning. How quickly a flood forms often depends on the habitat.

Slow-forming river flooding happens in regions called floodplains. These are large, flat areas of land along waterways with very shallow banks. When big storms hit, the water overflows the banks and spreads out across the plains.

This type of flooding isn’t always bad. It brings nutrients to the surrounding soil, making it fertile for growing crops. That’s why many people live in or near floodplains.

But too much water can destroy crops and damage homes. Rushing water can disrupt ecosystems by moving aquatic plants and animals to other habitats. And if flooding is so severe that it flows into local water treatment facilities, experts must monitor the incoming water to make sure the water is safe.

Another type of flooding is called a flash flood, when a flood happens within six hours of a heavy rainfall—as much as eight inches an hour. With no place to go, the moving water will tear through highways, valleys, and canyons, washing away vehicles, roads, bridges, and houses.

Quickly melting ice and snow can also cause flash flooding, especially when mountain snowmelt overflows the waterways below. On coastlines, hurricane rains cause water levels to rise, and the high winds push that water onto land. Called a storm surge, this also causes flash flooding.

Flooding in the future

Scientists believe that warming temperatures caused by climate change are increasing the risk of floods all over the world, especially in coastal and low-lying areas.

Warmer water changes the patterns of ocean currents, which changes global weather patterns. This means that some places will receive more rainfall than the ground can absorb. Other places will get less rain so the land will be drier—and unable to handle rainfall when it does occur.

Scientists think that climate change could also cause stronger hurricanes, with more rain and higher winds causing bigger storm surges. A warmer climate could also mean more snowmelt overwhelming the soil; melting polar ice could cause sea levels to rise and increase flooding. 

How to survive a flood

Experts might issue a flash flood watch if weather conditions are right. It doesn’t mean flooding will happen but that meteorologists want people to be prepared. When experts are sure a flash flood is on the way, they issue a warning so people can evacuate immediately. Here’s how to keep you and your family safe.

Before a flood

• Know your neighborhood. Research how close you are to streams, drainage channels, canyons, and any other low-lying areas that might flood.

• Keep emergency contact phone numbers in one place so you can get in touch with family members.

• Put together an evacuation plan and share it with everyone in your household. Know what paths and routes you can use to quickly get to a high, dry place.

• Conduct flood drills to practice evacuating quickly.

• Maintain an emergency kit with a three-day supply of food and water. Experts recommend canned or dried foods that don't need to be cooked, and at least one gallon of water per day for each person and pet.

During a flood

• Never wait for orders to leave; if you think a flood might be coming, evacuate immediately.

• If flooding hasn’t started, move important items to upper floors of your house.

• If flooding has already started where you are, move to the highest place you can find, like a roof of a house or car. Bring as much food, water, and sheltering blankets as possible.

• Never walk through flood water, especially if it’s moving. Hazardous chemicals, sewage, and even wild animals are often in floodwater, and just six inches of moving water can knock you off your feet.

• If you must walk through water to escape, walk where the water is still. Never touch electrical equipment if you are standing in water, or even if you’re wet.

• If water is quickly rising while you’re in your car, leave your vehicle and move to higher ground, like a hill or bridge.

After a flood

• If you’ve evacuated your house, return only after you’re given the all-clear from officials.

• If you stayed put, check your house for damage to electrical systems and appliances. Get rid of any food that might be contaminated from floodwater (or because it’s been unrefrigerated for awhile).

• Check your home for wild animals, especially snakes. They can get washed into your home with the floodwater.

• Ask an adult before you use water to brush your teeth, make food, or even wash your hands. Flooding can contaminate water and make you sick.

Comprehension Check!

1. How do flash floods differ from slow-forming river flooding?

2. How is climate change affecting the risk of flooding?

3. Can flooding have any positive effects on an ecosystem?

Exposittion Analysis

About John Green

John Green is the #1 New York Times bestselling author of Looking for Alaska, An Abundance of Katherines, Paper Towns, The Fault in Our Stars, and Turtles All the Way Down. He is also the co-author, with David Levithan, of Will Grayson, Will Grayson. He was the 2006 recipient of the Michael L. Printz Award, a 2009 Edgar Award winner, and has twice been a finalist for the Los Angeles Times Book Prize. Green’s books have been published in more than 55 languages and over 24 million copies are in print.

In June 2014, the movie adaptation of The Fault in Our Stars was released, directed by Josh Boone, produced by Fox 2000 and Temple Hill, and starring Shailene Woodley, Ansel Elgort, and Nat Wolff. The screenplay was written by Scott Neustadter and Michael Weber, who went on to adapt Paper Towns for film. Fox 2000 and Temple Hill released Paper Towns in the summer of 2015, starring Nat Wolff, Cara Delevingne, Justice Smith, Austin Abrams, Halston Sage, and Jaz Sinclair. In the second half of 2015, John signed a first-look production deal with Fox 2000. The limited series adaptation of Looking for Alaska was released on Hulu on October 18th, 2019 starring Kristine Froseth, Charlie Plummer, and Denny Love. A Netflix adaptation of Let It Snow was released on November 8th, 2019 starring Isabela Merced, Shameik Moore, Kiernan Shipka, Odeya Rush, Liv Hewson, Joan Cusack, Mitchell Hope and more.

In 2007, John and his brother Hank ceased textual communication and began to talk primarily through videoblogs posted to YouTube. The videos spawned a community of people called nerdfighters who fight for intellectualism and to decrease the overall worldwide level of suck. (Decreasing suck takes many forms: Nerdfighters have raised millions of dollars to fight poverty in the developing world; they also planted thousands of trees around the world in May of 2010 to celebrate Hank’s 30th birthday.) Although they have long since resumed textual communication, John and Hank continue to upload two videos a week to their YouTube channel, vlogbrothers. Their videos have been viewed more than 800 million times.

John and Hank launched educational YouTube channel Crash Course in late 2011 with funding from YouTube’s original channel initiative. John, Hank, and a range of other hosts teach humanities and science courses to viewers, with multiple new series launching each year. World History, Literature, Economics, Physics, Biology, Chemistry, and Government are just some of the courses available to date. Crash Course has over 10.7 million subscribers and 1.2 billion views. John and Hank are involved with a myriad of other video projects, including The Art Assignment, Ours Poetica, SciShow, hankgames, Eons and Healthcare Triage.

John’s book reviews have appeared in The New York Times Book Review and Booklist, a wonderful book review journal where he worked as a publishing assistant and production editor while writing Looking for Alaska. John grew up in Orlando, Florida before attending Indian Springs School and then Kenyon College. He currently lives in Indianapolis with his family.

Comprehension Check!

After reading the expository above, please Analyze the text using these types below:

Types of Expository Analysis

• Thesis - A sentence that states the essay’s main idea (one or two paragraphs)

• Style - What is the author’s writing style? Does the author use satire or humor in the text or is it just straightforward?

• Evidence - Underline the statement that becomes the reason for the author’s idea 

Report Text

Giraffe

The giraffe is the highest animal in the world. Its height can reach 4.8 to 5.5 meters and its weight is about 1360 pounds. Giraffe has unique characteristic. They have a very long neck and two small horns on its head. Giraffes have big brown eyes and are protected by thick and long eyebrows. Her body is covered with a unique pattern that is attached by brown spots all over their body.

Just like camels, giraffes can survive without drinking for a long time because giraffes can rely on the water contained in the leaves they eat. Giraffes are very selective in choosing food. They always eat young leaves that grow in the tree tops. Their tongue shaped like a knife help them to cut branches that are very hard.

Female giraffes can start pregnant at the age of five years, with a gestation period of 15 months. Commonly female giraffes bear one baby, but sometimes two babies at once. Giraffes bear their baby in a standing position. When the baby is about to be born, they drop it to the ground from a 1.5-meter height. A baby giraffe can stand for about 20 minutes after being born, and begin breastfeeding within an hour of birth.

After read the report text above, please answer the question below:

1.      What kind of text is above?

a.      Report text

b.      Descriptive text

c.      Narrative text

d.      Spoof

2.      The text tells us about?

a.      Giraffe's reproduction

b.      The strange animals

c.      The highest animal

d.      Baby giraffe

3.      The unique characteristic of a giraffe is?

a.      Two horns on its head

b.      Their long neck

c.      Brown spot

d.      Their foot

4.      The second paragraph mainly discussed?

a.      Giraffe's food

b.      Giraffe's characteristic

c.      Giraffe's life

d.      Giraffe's reproduction

5.      The word "it" in the third paragraph refers to?

a.      Neck

b.      Horn

c.      Baby giraffe

d.      Food

      Listening 

Introduction Material for Listening Meetings

https://youtu.be/TbmSCdn_iUo  (Beginner Level)

https://youtu.be/xv7zmrRPHZs  (Intermediate Level)

      Speaking

Hot Seat Section

https://wordwall.net/resource/54688763