"What happens when you exercise (1)" Our Body PPT

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"What happens when you exercise (1)" Our Body PPT

Part 1: Measuring heartbeat and breathing

When your body is in a calm state, measure your heartbeat and breathing rate per minute and record them.

Beat for one minute. Then measure and record the number of heartbeats and breaths per minute.

hint:

Every breath counts as one breath.

Prepare two loudspeakers and a hose so that we can hear the beating of the heart very clearly.

How do we feel differently before and after a beat?

How have the heartbeat and breathing rates changed?

Comparing two measured data, how to explain the changes in the two data?

What happens when you exercise? PPT, part 2: Why does breathing speed up?

We are breathing every moment, and as the amount of exercise increases, the number of breaths per minute will also increase.

What is the relationship between exercise and breathing?

Breathing the air in the pocket repeatedly, how will we feel after a while?

Tip: If you feel uncomfortable, stop the experiment immediately.

Try to explain why you feel depressed?

Is the air inhaled the same as the air exhaled?

Collect exhaled air and conduct experiments to verify our guesses.

Fill the air collection bottle with water and stand it upside down in the sink.

Pour exhaled air into the air collection bottle and drain the water out of the bottle.

Cover the mouth of the bottle with a glass piece in the water, remove the gas collection bottle from the water, and place it on the table.

During human movement, a large amount of oxygen needs to be consumed, so the number of breaths is more than usual, and the amount of exhaled and inhaled gas is also larger than usual. Regular exercise will increase our lung capacity and obtain more oxygen.

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For more information about the PPT courseware "What will happen when our bodies move", please click the "What will happen when our bodies move" ppt tag.

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Update Time: 2024-10-02

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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