Draw a particle diagram for a solid
what does 'freezing' mean?
Turning from a liquid to a solid
what is the male sex cell called?
Sperm!
what is the female sex cell called?
Egg
what is puberty?
when the body begins to develop and change
what is the function of bones
protection, support and movement.
Give three examples of contact forces
friction, air resistance, tension, applied, normal/buoyancy
what is the function of root cells
to absorb water
what is the function of the cervix
holds foetus in place, it is a muscle that closes the top of the vagina
what are 2 changes only a girl goes through during puberty
menstrual cycle, hips widen, breasts develop, layers of fat
what are 2 changes only a boy goes through during puberty
sperm produced, voice deepens, face and body hair, muscles develop
what can affect foetal development?
smoking, alcohol, not eating healthy food.
where does gas exchange in humans happen?
alveoli
