Earth and the solar system

how do tides form

gravitational pull from the moon

how does day happen

earth rotating and areas covered by sun is day

what is a rotation

spinning about an axis

what is a revolution

complete cycle around the sun

what is the period of earths rotation

24hrs

what is a period

time it takes to complete one cycle

what is the formula for orbit speed

2(pi)r/T

gravity on the moon surface

1.6N