It is true that only half of the moon is always illuminated
by the sun. The reason why the moon
changes it phases is because Moon orbits around the Earth, and due to this some
areas of the half of the moon will not be lit by the sun.
<h3><u>Answer;</u></h3>
5.1 km
<h3><u>Explanation</u>;</h3>
The longest measurement made is 3.2 miles
But the SI units of distance is Km
1 mile = 1.61 km
Therefore; <em>3.2 miles will be equivalent to ; </em>
<em>3.2 × 1.61 </em>
<em>= 5.152 </em>
<em>≈ </em><u><em>5.1 </em></u><u>km</u>
Answer:
A prism can disperse light into different colors when the light enters the prism at a "fixed" angle - light coming in, perhaps, thru a narrow slit
If light can enter at all angles, then dispersion occurs at all angles and no dispersion can be seen