1: What is the male sex hormone called?

Adrenaline
Thyroxine
Oestrogen
Testosterone

2: Where is the hormone oestrogen made?

Pituitary
Ovaries
Testicles
Vagina

3: What is the first sign of puberty in girls?

Hips widen
Pubic hair starts to grow
Periods start
Breasts start to develop

4: Why do teenagers often suffer from spots?

They have too many hormones
They masturbate a lot
They eat too much chocolate
They have more sebaceous glands

5: What is the first sign of puberty in boys?

Pubic hair starts to grow
Testicles get bigger
Voice breaks
Penis gets bigger

6: Why do pre-teenage girls sometimes look older than they are?

The growth spurt happens earlier for girls
Puberty starts much earlier for girls
They wear platform shoes
They mix with older teenagers

7: What causes a boy's voice to break?

The larynx grows
The neck becomes longer
A bigger chest causes a deeper voice
Trying to sound more grown up

8: Which organ makes human growth hormone?

Hypothalamus
Ovaries
Testes
Pituitary

9: How do hormones travel around the body?

Through ducts
Through bones
Along nerves
In the blood

10: How long does puberty usually last?

8 to 10 years
6 to 8 years
1½ to 3 years
4 to 6 years