Weight Body Mass Index (BMI)

a Below 18.5b 18.5–24.9

Overweight cd e

Discover Science 5 Block 1 Unit 1 Lesson 2 Photocopiable © Oxford University Press 2014

Block 1 The human bodyUnit 1 What happens if I don’t keep a healthy weight?Lesson 2 How does energy imbalance affect my health?

Test Name: Points: / 25

1 3 Listen and complete the chart.

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2 Read and complete with words from the box.

kilograms multiplying height weight mass

Body Mass Index (BMI) tells us if we are within the limits of a healthy 1 for our

height. The data has nothing to do with how a person looks. Actually, scientists use a formula to

calculate BMI. To scientists, BMI equals 2 in 3 divided by the

result of 4 the height of the person, in meters, times the 5 , in

meters, again.

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3 Read and write the corresponding word.

a This condition can be the

result of not eating enough.

b This is the sugar in our blood.

c This organ helps produce insulin.

d People who have this eating disorder

tend to eat a lot and then vomit.

e If our body does not produce enough

insulin, we might have this illness.

Discover Science 5 Block 1 Unit 1 Lesson 2 Photocopiable © Oxford University Press 2014

4 Read and complete the report.

Introduction

Robert is an 11-year-old boy who plays video games, watches T.V. all the time and does not do

any sports regularly. He has recently told his mother that his knees are sore and that he has felt

pain in his ankles when he walks. His mother has taken Robert to the doctor to find out what is

wrong. Materials and methods

Robert’s doctor measured his height and weight to calculate his 1 . Robert’s

current height is 1.35 m and his weight is 50 kg. The doctor used the following equation:

mass (kg) ÷ (height (m) × height (m)).

Results

The doctor calculated Robert’s 2 and got 27.43 as a result.

Conclusion

From the data, the doctor diagnosed Robert as 3 . Robert currently has a

higher chance of developing 4 . This illness can cause serious5 problems that can lead to death.

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5 Read and answer.

Twelve months later, Robert visited his doctor

again. The doctor measured Robert’s height

and weight and found out that Robert is

now 1.45 m tall and weighs 35 kg. Calculate

Robert’s current BMI and determine if he

has a healthy weight. If he does not have a

healthy weight, write three health

consequences he might face in the future.

a Robert’s current BMI =

b Does Robert have a healthy weight? .

c Health consequence 1: .

d Health consequence 2: .

e Health consequence 3: .

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