Objects we see can be placed into two categories: luminous objects and illuminated objects. luminous objects are objects that create light and illuminated objects are objects that reflect light. which of these is an example of a luminous object?

a) sun
b) cloud
c) moon
d) sky

A

Explanation:

The Sun is an example of a luminous object because it creates its own light.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

the product of the pressure and volume is also constant