Landforms, rivers and resources of the United States and Canada
Grade 6 Social Studies Worksheet - Building Confidence
Circle the best answer.
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Card A (map key, rivers and the Continental Divide). The Continental Divide runs along the crest of the Rocky Mountains. Rain and snow that fall west of the divide drain toward the Pacific Ocean, as the Columbia River does. Rain and snow that fall east of the divide drain mostly into the Missouri and Mississippi system, which flows south, or toward the Atlantic side. Rivers on both sides begin high in the mountains.
A stream starts on the east slope of the Rocky Mountains. Where does its water most likely go, Tala asks?
- Uphill toward the crest, because the divide pulls water back toward the peaks
- Toward the Pacific Ocean, as the Columbia River does
- Rivers on both sides begin high in the mountains, where snow and rain collect
- Into the Missouri and Mississippi system, which flows south
A snowflake lands just east of the divide and melts. What happens to the water next, Bo asks?
- It stays on the mountain as snow, since the Rocky Mountains hold their water
- It crosses the divide and joins the Columbia River on the way to the Pacific
- It runs downhill and joins streams that drain into the Missouri and Mississippi
- It flows toward the Pacific because the divide sends melting snow west
A student claims: "Every river in the United States flows toward the Atlantic side." How does Card A bear on that, Ren asks?
- It weakens the claim, because Rocky Mountain rivers flow to the Pacific
- It supports the claim, because the Mississippi system is the longest in the country
- It weakens the claim: west of the divide, rivers such as the Columbia flow to the Pacific
- It supports the claim, because Card A says east-side water goes toward the south
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Card B (fact card, the Mississippi River). The Mississippi flows south through the middle of the country to the southern coast. Its watershed, the land that drains into it, covers much of the central United States and a small part of two Canadian provinces. Barges carry corn, soybeans and coal down the river to the port near its mouth, where cargo moves onto ocean ships. St. Louis grew where the Missouri River joins the Mississippi.
Why do farmers send corn and soybeans by barge down the Mississippi, Noah asks?
- The river flows north to Canada, where ocean ships take the cargo
- Barges make the river flow south, so grain can travel in that direction
- The river leads to a port near its mouth, where cargo moves onto ocean ships
- The Mississippi's watershed covers much of the central United States
Why did a big city grow where the Missouri River joins the Mississippi, Pia asks?
- A big city was there first, so the two rivers chose to meet beside it
- The Mississippi flows north from St. Louis, so goods must stop there
- A junction gives boats two routes for goods, so trade and jobs gathered there
- Any place beside a river grows into a big city, so St. Louis is not special
A student claims: "The Mississippi only matters to people who live beside it." How does Card B bear on that, Zee asks?
- It supports the claim, because Card B says St. Louis grew beside the river and its trade
- It weakens the claim: cargo goes to ocean ships, so far-away buyers depend on it
- It weakens the claim, because the river brings ocean cargo north to farms along the banks
- It supports the claim, because the watershed covers just the central states and nowhere else
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Card C (fact card, the Great Plains). The Great Plains are a huge, mostly flat area of grassland east of the Rocky Mountains. Rainfall is lower in the west of the Plains than in the east. The soil is deep and fertile. Farmers grow wheat and corn, mostly in the wetter east, and ranchers raise cattle on the drier grassland in the west.
A student claims: "Rainfall is the same across the whole Great Plains." How does Card C bear on that, Jun asks?
- It weakens the claim, because the east of the Plains is drier than the west
- It weakens the claim, because rainfall is lower in the west than in the east
- It supports the claim, because flat grassland has the same weather throughout
- It supports the claim, because Card C says the soil is fertile everywhere
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Card D (fact card, Canada). The Canadian Shield is a vast area of ancient, hard rock around Hudson Bay, with thin soil, many lakes and long, cold winters. Its rock holds metal ores such as nickel and gold. Most Canadians live in the south, near the border with the United States, in the St. Lawrence and Great Lakes lowlands and along the southern edge of the prairies, where winters are milder and the soil is deeper.
Compare the Canadian Shield with the St. Lawrence and Great Lakes lowlands. Which is better for farming, and why, Milo asks?
- The Shield, because its rock holds ores such as nickel and gold
- The lowlands, because they have deeper soil and milder winters
- The Shield, because thin soil drains well and cold winters keep pests away
- The Shield, because its many lakes fill the farm fields with good soil
Why do most Canadians live in the south, near the border, Luz asks?
- The south has milder winters and deeper soil than the cold, rocky north
- The Shield stretches across the south, where its thin soil draws farmers
- Nothing lives in the north, so people move south for jobs
- Most Canadians live there, so winters are milder and the soil is deeper
A student claims: "The Canadian Shield has nothing of value." How does Card D bear on that, Ari asks?
- It weakens the claim, because the Shield's rock holds ores such as nickel and gold
- It supports the claim, because thin soil means the land has no value to anyone
- It weakens the claim, because the Shield has the deepest soil in Canada and is farmed
- It supports the claim, because the Shield has thin soil and long, cold winters