Write the letter of the correct answer on the blank. ________ 1. Study the diagram below.
What are gases A and B? Gas A
Gas B
A.
Oxygen
Carbon Dioxide
B.
Oxygen
Oxygen
C.
Carbon Dioxide
Oxygen
D.
Carbon Dioxide
Carbon Dioxide
________ 2. Aldo received a game card that states the following clues: • •
It takes in oxygen into the body It removes carbon dioxide from the body.
Which one of the following systems carries out the processes described above? A. B. C. D.
Circulatory system Muscular system Skeletal system Respiratory system
__________ 3. The hairs in the nose trap _______________________ from the air in the respiratory passage. A. B. C. D.
dust waste gases impure blood unwanted food
__________ 4. Jeffrey sets up the experiment below to find out how respiration affects the amount of oxygen and carbon dioxide in a sealed box.
Which of the following graphs best describe the changes in the amount of oxygen and carbon dioxide in the sealed box over a period of 12 hours?
A. B. C. D.
(1) (2) (3) (4)
___________ 5. The graph below shows the pulse rate of a boy over a period of time.
Which part of the graph shows that the boy has just stopped playing basketball? 1. 2. 3. 4.
A B C D
__________ 6. Which one of the following diagrams shows the flow of air in our body? A.
B.
C.
D.
_________ 7. When the diaphragm in your chest cavity moves upwards and downwards, ______________ is taking place. A. B. C. D.
breathing circulation respiration photosynthesis
__________ 8. The air that we breathe out contains _____________________ than the air we breathe in. A. B. C. D.
more heat more oxygen less water vapour less carbon dioxide
____________ 9. Which one of the following animals has a different breathing methods? A. B. C. D.
Bat Dog Shark Whale
____________ 10. The table below shows Ming Long's pulse rate and number of breaths while at rest. Pulse rate Number of breaths (per minute) 70
40
Which one of the following best shows Ming Long's pulse rate and number of breaths after running for 20 minutes? Pulse rate
Number of breaths (per minute)
A.
50
30
B.
50
60
C.
110
30
D.
110
60
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