Which statements describe equal-area projection? Select three options.

Different types exist.

Longitude lines are straight.

Latitude lines meet at the poles.

Land area is more accurate than on a Mercator projection.

Angles become distorted moving away from the equator.

1, 2, and 4

Explanation: The statements that describe equal-area projection are:

1.) Longitude lines are straight.

2.) Latitude lines meet at the poles.

4.) Angles become distorted moving away from the equator.

Because an equal area projection is a map projection that shows regions that are of the same size on the Earth the same size on the map but may distort the shape, angle, and/or scale

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.