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Puberty is the stage during the development of the ________ system.

• reproductive

• digestive

• respiratory

• circulatory

Puberty usually starts between the ages of ________.

• 9-15

• 5-8

• 16-20

• 21-25

What does puberty include?

• Only primary changes

• Only secondary changes

• Both primary and secondary changes

• Neither primary nor secondary changes

Primary changes are the changes that are directly related to the _______ organs and their function.

• reproductive

• digestive

• respiratory

• excretory

Secondary changes are the physical changes that are not directly about reproduction, but show that the body is becoming more _______.

• adult

• childish

• immature

• fragile

Which of the following physical changes occurs to both boys and girls during puberty?

• Growth of body hair

• Deepening of voice

• Development of facial hair

• Widening of hips

What is a growth spurt?

• A period of slow physical growth

• A period of rapid physical growth during which a child or adolescent grows taller or gains weight faster than usual

• A time when children stop growing

• A period of mental development only

A growth spurt usually happens during _______.

• puberty

• childhood

• old age

• infancy

For girls, a growth spurt often occurs between which ages?

• 5-8

• 9-14

• 15-18

• 17-20

For boys, a growth spurt usually happens between ages _______.

• 11-16

• 8-10

• 17-20

• 6-9