Номер 4, страница 145 - гдз по английскому языку 6 класс учебник Комарова, Ларионова

Across the curriculum. 8. Physical Education - номер 4, страница 145.

Условие.

4 Read the text and answer the questions.

Heart rate

When we do sports or any exercise, our muscles need more oxygen. Oxygen travels around the body in the blood and it is the heart which pumps blood round the body – it needs to be strong to do this. The heart muscle contracts or beats automatically and this is your heart rate. In adults, this heart rate is normally about 70 beats per minute. For children, the heart rate is about 100 beats per minute. When we do exercise, our heart rate goes up because the heart beats faster, so that more oxygen can travel to the muscles that need it.

1 How does oxygen travel around the body?

2 What is the normal heart rate for adults?

3 What is the normal heart rate in children?

4 What happens to the heart rate when we exercise?

Project

Test your heart rate when you exercise and show your results to your classmates and teacher.

Plan

Copy this table in your notebook.

Heartbeat experiment
Number of heartbeats per minute when relaxed
Number of heartbeats per minute after doing some activity
Number of heartbeats per minute after doing a lot of activity

Research

Find your normal heart rate:

1 Find your pulse on your wrist. Count how many times your heart beats in 30 seconds.

2 Multiply the number by two to find your normal heart rate.

3 Make a note of this number in the table.

Prepare

1 Walk around the room for one minute. Take your pulse again and make a note of your heart rate.

2 Now run as fast as you can for two minutes.

3 Take your pulse again and make a note of your heart rate.

4 Fill in the table with your heart rate results.

Present your material

Make a graph to show how your heart rate changes with activity. Write a description of the experiment and compare with your classmates’ descriptions.

Решение.

Решение 2.

1 Как кислород перемещается по телу?

Ответ: Oxygen travels around the body in the blood.

Кислород перемещается по телу в крови.

2 Какова нормальная частота сердечных сокращений у взрослых?

Ответ: The normal heart rate for adults is normally about 70 beats per minute.

Нормальная частота сердечных сокращений у взрослых обычно составляет около 70 ударов в минуту.

3 Какова нормальная частота сердечных сокращений у детей?

Ответ: The normal heart rate in children is about 100 beats per minute.

Нормальная частота сердечных сокращений у детей составляет около 100 ударов в минуту.

4 Что происходит с частотой сердечных сокращений, когда мы тренируемся?

Ответ: When we exercise, our heart rate goes up because the heart beats faster.

Когда мы тренируемся, наша частота сердечных сокращений увеличивается, потому что сердце бьется быстрее.