Ecosystems p2-1
Ss ch 11-1
SS ch 11-2
Ecosystems p2-1
100
A food web is made up of:
several connected food chains
100
The steamboat increased the speed people and goods traveled on ________________.
Water
100
Which 1830s invention made it easier for farmers to farm their own land in the Midwest?
Mechanical Reaper
100
What is the main source of energy for most ecosystems?
Sunlight
200
True or False: Energy flows in a food chain from consumers to producers.
False
200
The steam locomotive increased the speed people and goods traveled on ________.
Land
200
How did the telegraph impact westward expansion?
People were more willing to move west.
200
What do decomposers do in an ecosystem?
Break down dead organisms
300
A student observes a food chain: Sun-> Grass -> Rabbit -> Fox.
Explain why the rabbit is important in this food chain?
The rabbit transfers energy from the producer to the fox.
300
Which TWO technological advancements contributed most to increased trade and settlement along the Great Lakes in the early 1800s?
Railroads & Steamboats
300
Choose the best word to complete each sentence about technological advancements in early U.S. history. The telegraph increased the speed _____________ traveled across long distances.
goods, information, or speed
information
300
In a food chain, energy moves from:
The sun to producers to consumers
400
Which one of these explains why energy must start with the sun in most food chains.
A. The sun is the primary source of energy that supports plant growth, which forms the base of the food chain.
B. Food chains can start with decomposers to recycle energy
C. Energy is primarily derived from water sources in ecosystems
A. The sun is the primary source of energy that supports plant growth, which forms the base of the food chain.
400
What was an economic impact of the invention of the steamboat and the improvements to the steamboat?
shipping costs decreased
400
Which phrase correctly completes the diagram? 
end of plantation lifestyle
industrialization of the South
increase in the use of enslaved labor
decrease in cotton production.
increase in the use of enslaved labor
400
Which group of organisms is usually found at the beginning of a food
Producers
500
All food chains are food webs. True or False?
False
500
What was an economic impact of the invention of the steamboat and the improvements to the steamboat?
Cities developed along major rivers and the Great Lakes.
500
Which phrase best completes the graphic organizer?
decreased the use of enslaved labor
encouraged farmers to move west
made growing cotton less profitable
increased productivity of cotton farming
increased productivity of cotton farming
500
Which of these would be a correct food chain?
Grass-> Sun -> Rabbit -> Hawk
Sun -> Grass -> Rabbit -> Hawk
Sun -> Rabbit -> Grass -> Hawk
Hawk -> Rabbit -> Grass -> Sun
Sun -> Grass -> Rabbit -> Hawk