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Unit 6 Space
Test Description: Review of TEKS 7.9A and 7.9B
Instructions: Answer all questions to get your test result.
1) Which of the following is a characteristic that supports life on Earth?
A
All o fthe above
B
Presence of Oxygen
C
Presence of water
D
Force of Gravity
2) How many layers does the atmosphere have?
A
2
B
5
C
7
D
3
3) Which element makes up 78% of Earth's air?
A
oxygen
B
all of the above
C
nitrogen
D
other gases
4) Which of the following protects earth by absorbing radiation from the Sun?
A
ozone layer
B
moon
C
clouds
D
gravity
5) Why is the recycling of water important on a shuttle?
A
They can pack all the water they will need.
B
they don't recycle water
C
there is water in space
D
they can not take enough water with them
6) How is eating different in space?
A
food is dehydrated
B
food is in pouches instead of plates
C
all of the above
D
food must be carefully eaten
7) Why do astronauts need to wear special suits in space?
A
to keep them warm
B
no gravity in the shuttle
C
to regulate the pressure and temperature and provide oxygen
D
to make it easier to eat
8) Which element makes up 21% of Earth's air?
A
other gases
B
carbon dioxide
C
oxygen
D
nitrogen
9) For the shuttle to leave the atmosphere and travel into space, what needs to happen?
A
a force less than that of gravity must be applied
B
a greater force than gravity must be applied
C
no forces need to be applied
D
the shuttle can not leave the atmosphere
10) What holds the atmosphere around Earth?
A
rings
B
nothing
C
gravity
D
oxygen
*select an answer for all questions
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