WorksheetsGlaciers and Rivers Assessment
Total questions: 20
Worksheet time: 10mins
What was the name of the last major glacial period that shaped Ohio's landscape?
The Laurentide Glaciation
The Ohioan Glaciation
The Appalachian Glaciation
The Wisconsinan Glaciation
A ridge of unsorted glacial till left at the farthest point the glacier reached is called a...
Kettle Lake
Terminal Moraine
Ground Moraine
Outwash Plain
How is a kettle lake formed?
A river carves a deep, circular hole in the ground.
The glacier's heavy weight presses the ground down, forming a basin.
A large block of ice breaks off, is buried by outwash, and then melts.
A moraine creates a dam, and water builds up behind it.
The flat, fertile farmland of western and northwestern Ohio is a result of what glacial feature?
Ground Moraine
Appalachian Plateau
Terminal Moraine
Kettle Lakes
Why is southeastern Ohio hilly and rugged, unlike northwestern Ohio?
This region had more volcanoes that created hills.
The glacier did not cover this part of the state.
The glacier deposited taller terminal moraines in this region.
This region has more rivers, which carved deep valleys.
What is 'glacial till'?
Sediment sorted by size, deposited by glacial meltwater.
Solid rock that was scratched by the glacier.
A random, unsorted mixture of clay, sand, gravel, and boulders.
A large block of ice left behind by a glacier.
What is the specific name of the massive continental glacier that covered Ohio?
The Wisconsinan Ice Sheet
The Laurentide Ice Sheet
The Appalachian Ice Sheet
The Ohioan Ice Sheet
The 'gradient' of a river refers to its...
Width
Sediment load
Slope
Age
As a river ages from 'youthful' to 'old-age', what generally happens to its gradient?
It increases (gets steeper).
It decreases (gets flatter).
It stays the same.
It increases and then decreases.
Large, S-shaped curves in a river channel are called...
Meanders
Oxbows
Floodplains
Deltas
What is a 'floodplain'?
A V-shaped valley in a youthful river.
A U-shaped, curved lake cut off from a river.
A flat area of land next to a river that gets covered during floods.
The amount of sediment a river can carry.
Which stage of a river's life is characterized by the widest floodplain and slowest velocity?
Youthful
Mature
Old-Age
Infant
How does an oxbow lake form?
A glacier carves a U-shaped valley that fills with water.
A meander becomes so wide that the river cuts a new, shorter path.
A kettle lake and a river merge together.
A spring floods and creates a new lake on the floodplain.
What is a river's 'sediment load'?
The total amount of water in the river.
The speed of the water.
The amount of dissolved minerals, sand, silt, and clay carried by the water.
The steepness of the river's channel.
The rolling hills found in central Ohio (like the ones running south from Bellefontaine) are examples of what glacial feature?
Ground Moraine
Kettle Lakes
Terminal Moraine
Unglaciated Plateau
What is the primary difference between glacial till and outwash?
Till is rock; outwash is soil.
Till is deposited by ice and is unsorted; outwash is deposited by water and is sorted.
Till is found in moraines; outwash is found in kettle lakes.
Till is from the Wisconsinan Glaciation; outwash is from older glaciations.
Which two factors are most responsible for creating meanders?
High gradient and a straight channel
Erosion on the outside of a bend and deposition on the inside
Glacial till and kettle lakes
High sediment load and low velocity
Why does a river's velocity (speed) decrease as it gets older?
The gradient (slope) increases.
The gradient (slope) decreases.
The sediment load disappears.
The channel gets narrower.
What is the landform created at the mouth of an old-age river where it deposits its sediment load into a larger body of water?
A Delta
A Moraine
A Kettle
A Floodplain
As a river channel gets wider and its velocity slows, its ability to carry a large sediment load...
Increases
Decreases
Is not affected
Reverses direction
