Mystery of the Megaflood (adapted from PBS)

Last updated about 1 year ago

17 questions

Note from the author:

This is a lesson modified from the PBS lesson at https://www.pbs.org/wgbh/nova/teachers/activities/3211_megafloo.html
I've added some supports for younger students and removed some more complicated vocabulary.

Instructions

Read the lesson attached and answer the questions as you go.

Required

Mystery of the Megaflood (adapted from PBS)

Last updated about 1 year ago

17 questions

Note from the author:

This is a lesson modified from the PBS lesson at https://www.pbs.org/wgbh/nova/teachers/activities/3211_megafloo.html
I've added some supports for younger students and removed some more complicated vocabulary.

Instructions

Read the lesson attached and answer the questions as you go.

Required

Move each example measurement into the category of what it is measuring.

Eiffel Tower = 321 meters
1980 Mt. St. Helens debris surge = 500 km/h
Goodyear Blimp = 5,740 Cubic Meters
1993 Mississippi River Flood, Flow Rate .11cu km/h
Mt. Everest 8,850 M high
Football Field = 4,504 Square Meters
Maine = 91,700 Square Km
Marathon Race = 42.2 Km
Lake Erie = 483 Cubic Km
HMS Titanic = 232,000 Cubic Meters
Mississippi River daily output = 1.4 Cubic Km
Lake Superior = 12,230 Cubic Km
Minimum Hurricane = 121 Km/h
Utility pole = 11 meters high
Spokane and Seattle = 367 km
Empire State Building = 381 meters
New York City to Washington DC =386 Km
Washington Monument = 170 meters high
Highest posted interstate limit (Texas, 2005) = 129 Km/h
Delaware = 6,447 Square Km
Chicago's O'Hare Airport = 28.3 square km

Length
Height/depth
Area
Volume
Speed

Required

Mystery of the Megaflood (adapted from PBS)

Mystery of the Megaflood (adapted from PBS)

Move each example measurement into the category of what it is measuring.

Move each example measurement into the category of what it is measuring.

During one of the most recent ice ages, about _________ years ago, ice sheets thousands of feet thick covered what is now southern British Columbia.

A lobe from the Cordilleran ice sheet crept into the Idaho panhandle and blocked the Clark Fork River with an ice dam. How high was the ice dam?

Water melting from the glacier further north backed up behind the ice dam, forming Glacial Lake Missoula. It covered ____ square kilometers of western Montana.

The climate warmed, weakening the ice dam's base. What happened when the ice dam could no longer resist the increasing water pressure?

As water rushed westward from the ice dam, it carved out the Channeled Scabland. What notable geographical feature did it create?

Rushing water also created present-day Dry Falls. What are its dimensions?

At the flood's height, certain geographical shapes in Camas Prairie were formed. What are they?

The water tore across the Camas Prairie at a high speed. What was this speed?

Despite its incredible nature, J Harlen Bretz theorized the flood happened ...

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

During one of the most recent ice ages, about _________ years ago, ice sheets thousands of feet thick covered what is now southern British Columbia.

A lobe from the Cordilleran ice sheet crept into the Idaho panhandle and blocked the Clark Fork River with an ice dam. How high was the ice dam?

Water melting from the glacier further north backed up behind the ice dam, forming Glacial Lake Missoula. It covered ____ square kilometers of western Montana.

The climate warmed, weakening the ice dam's base. What happened when the ice dam could no longer resist the increasing water pressure?

As water rushed westward from the ice dam, it carved out the Channeled Scabland. What notable geographical feature did it create?

Rushing water also created present-day Dry Falls. What are its dimensions?

At the flood's height, certain geographical shapes in Camas Prairie were formed. What are they?

The water tore across the Camas Prairie at a high speed. What was this speed?

Despite its incredible nature, J Harlen Bretz theorized the flood happened ...

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)

Which of these comparisons works in this spot? (hint: only one correct answer per spot)