Practice - Macmillan/McGraw-Hill

Name
A cause is the reason why something happens, and an effect is
the result, or the thing that happens.
Match the causes with their effects from the box. Write the letter of
the effect on the line next to the cause.
Effects:
a. Lewis and Clark were sent to explore the new territory.
b. received help from friendly Native American tribes.
c. created accurate journals that described people, places, and
things.
d. Lewis, Clark, and their team had very little to eat.
e. doubling the size of the United States
f. halting the expedition in order to catch one.
Causes:
1. Lewis and Clark took many breaks to write down everything they saw,
which .
Practice
Comprehension:
Cause and Effect
2. President Jefferson bought the Louisiana territory from France, thus .
3. The buffalo moved south for the winter, so .
4. Lewis and Clark did not know the land of the Louisiana Purchase, so
they .
5. Lewis and Clark wanted to examine a prairie dog, which resulted in
their .
6. President Jefferson wanted to fi nd a water route to the Pacifi c Ocean,
164
so .
A Historic Journey • Grade 5/Unit 5
At Home: Write a paragraph about the effects of Lewis and
Clark’s expedition of the Louisiana Purchase.
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