Why do scientists think people first migrated to the Americas?

to search for hunting grounds for food

Which of the following has been a leading theory about how human beings first came to the Americas?

They crossed a land bridge from Asia to North America.

The exposure of a land bridge between Asia and present-day Alaska during the last Ice Age resulted in

the migration of people into the Americas.

What happened to the Beringia land bridge when the ice age began to end and temperatures started to rise?

The oceans rose and covered it with water.

How do scientists think people first arrived in North America?

During the Ice Age, the sea level dropped and people crossed land.

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Chapter 1.1 Review

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Answers

1
Culture is defined as
a way of life.
a scientific dating technique.
an approximate number.
a method of farming.
2
The land bridge that connected Asia and the Americas was called
Antarctica
Beringia
Alaska
Siberia
3
Why do scientists think people first migrated to the Americas?
to escape from harsh rule in their homeland
to search for hunting grounds for food
to map the land for future generations
to seek out other ancient peoples for wisdom
4
When the number of large mammals began to disappear, people had to find different _____ for food.
nomads
sources
estimates
cultures
5
Which of the following has been a leading theory about how human beings first came to the Americas?
They crossed a land bridge from Asia to North America.
They crossed glaciers that once linked Antarctica to South America.
They sailed from Europe to explore new lands.
They swam across the Pacific Ocean from small islands.
6
The exposure of a land bridge between Asia and present-day Alaska during the last Ice Age resulted in
the migration of people into the Americas.
the development of farming in the Americas.
the introduction of new plants and animals to Asia and Europe.
the establishment of advanced cultures in North America.
7
The tools, weapons, and artwork of early peoples are called
archaeology
carbon dating
nomad
artifacts
8
People who move from place to place in search of hunting grounds or food sources are called
Nomads
Archaeologists
Cultures
Mastodons
9
What happened to the Beringia land bridge when the ice age began to end and temperatures started to rise?
The oceans rose and covered it with water.
It stayed the same and still connects the continents today.
It was destroyed by an earthquake.
It grew wider and allowed more people to migrate.
10
Which of these animals was a food source for early Americans?
tigers
mastodons
lions
maize
11
How do scientists think people first arrived in North America?
After the Ice Age, glaciers melted and people came in small boats.
During the Ice Age, the sea level dropped and people crossed land.
After the Ice Age, glaciers melted and people crossed land.
During the Ice Age, the sea froze and people crossed the ice.
12
Which of these is a type of corn?
squash
maize
wheat
bison
13
Which method of getting food changed the nomadic way of life?
Gathering
Farming
Hunting
Fishing
14
Where do many archaeologists believe the earliest Americans came from?
England
North America
Asia
South America

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