Which of the following is an example of how a scientist might use a model? microscopes are used to magnify a group of cells on sets of slides. marbles placed inside a hollow sphere are used to describe protons in a nucleus. a wrench is used to tighten a nut onto a piece of wood.
stopwatches measure the amount of time it takes for runners to complete a mil

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

sex cells are usually half's then they find another half and make a fertilize egg

mass and weight are closely related because mass affects the weight of an object experiencing the effects of gravity. weight is the measure of the force of gravity on an objects's mass, while mass is the measure of how much matter there is in an object.