Year 8 Science · Unit 1 · Lesson 10

Gas Exchange and System Interaction

Foundation Worksheet

Name
Date
Class

Learning Goals

Warm Up

Fill the gap

Choose the correct word from the word bank to complete each sentence. Two words will not be used.

oxygen carbon dioxide respiratory circulatory gas exchange transport interact digestion

The system is the body system responsible for with the environment. During gas exchange, enters the body and leaves it. However, gas exchange alone is not enough, the gases still need to be moved to and from cells throughout the body. This is the role of the system, which uses blood to gases around the body. The two systems must for cells to receive what they need.

Your Turn

True or False? Fix the false ones

Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.

The respiratory system exchanges gases with the environment, bringing oxygen in and removing carbon dioxide.

Correct it:

T
F

Once the respiratory system has exchanged gases, no other system is needed because cells are already near the lungs.

Correct it:

T
F

The circulatory system transports gases around the body after they have been exchanged by the respiratory system.

Correct it:

T
F

Body systems work in isolation, the respiratory system and the circulatory system do not affect each other.

Correct it:

T
F

Show What You Know

1. When you hold your breath underwater at a Sydney pool, your face goes red. Using what you know about how the respiratory and circulatory systems interact, explain why holding your breath causes this response.

Recall 2 marks

2. Explain the difference between the role of the respiratory system and the role of the circulatory system in supplying oxygen to body cells. Why are both systems needed?

Recall 3 marks

Wrap Up

In one sentence, what was the main idea of this lesson?

HSCScience · Year 8 Science · Unit 1 · Lesson 10 · Foundation Worksheet