What do moons go around?
State how many planets there are in the solar systems
What is a nebulae?
Which best defines an orbit?
What unit is used to measure the distance between stars?
What energy store is involved when an object heats up or cools down?
Which thermal energy store has changed the most in the following?
When is the kinetic energy store of an object zero?
Kettle A transfers 16 J in 2 s. Kettle B transfers 18 kJ in 2 s. Explain which is more powerful.
In humans, what is the male gamete?
In humans, what is the female gamete?
Where are sperm made?
Where are ova made?
What is the common name for menstruation?
How long is the average pregnancy in weeks?
How long is the average menstrual cycle
What happens around day 14 of the menstrual cycle?
Female humans release an ovum once every