Welcome to your B6 Quiz 1.2

1. 
In the Class 6 investigation (Workbook), which person had the highest breathing rate after jogging?

Breathing rate in breaths per minute: Person 1 = 30, Person 2 = 50, Person 6 = 40.

Hint
2. 
At rest, we breathe in and out about 16 times every minute.

Hint
3. 
Which part carries air down from the nose or mouth into the lungs?

Hint
4. 
When you breathe out, the chest gets bigger and air is pulled into the lungs.

Hint
5. 
What gas does the blood carry back to the lungs so we can breathe it out?

Hint
6. 
Fill in the blank:

Air enters the body through the nose or the .

Hint
7. 
What are the two organs we use for breathing?

Hint
8. 
When you breathe in, the ribs move downwards and inwards.

Hint
9. 
Fill in the blank:

When you breathe in, the diaphragm muscle and moves downwards.

Hint
10. 
Fill in the blank:

The lungs are in the chest and are protected by the .

Hint
11. 
The lungs are like stretchy sponges that fill up with air.

Hint
12. 
Fill in the blank:

The number of times we breathe in and out in one minute is called our .

Hint
13. 
Fill in the blank:

Our breathing rate changes depending on how much our body needs.

Hint
14. 
Fill in the blank:

In Activity 1, you breathe out through a straw into a to see it inflate, showing how the lungs fill with air.

Hint
15. 
Fill in the blank:

We need to live. This gas moves from the air in our lungs into the blood when we breathe in.