
Air and the respiratory system
Authored by Alex Chee
Science
5th Grade
Used 31+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The air that we breathe contains mainly ___________________.
oxygen
carbon dioxide
nitrogen
water vapour
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
About _______________% of air is oxygen.
80
60
40
20
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
For photosynthesis to happen in plants, the plants need light, ______________ and ____________.
carbon dioxide, water
carbon dioxide, space
oxygen, water
oxygen space
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The organ in the human body that helps to remove carbon dioxide in our blood is _____________.
heart
lungs
nose
windpipe
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tiny openings (stomata) are found mainly on the underside of leaves to __________.
prevent minerals from evaporating too quickly
prevent water from evaporating too quickly
prevent carbon dioxide from escaping too quickly
prevent oxygen from escaping too quickly
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following activities will result in a person having the fastest rate of breathing?
Jogging around
Running around the field
Walking up the stairs
Reading a book
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What will happen to a plant if the leaves are coated with a layer of oil after a week?
The plant will remain healthy.
The leaves of the plant remain shiny.
The plant will die.
The leaves of the plant grow bigger.
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