Julie and Devon are modeling how the Sun heats Earth. Julie hangs a sheet of graph paper on a wall. Devon holds a flashlight and shines it in a straight line toward the graph paper while Julie dims the lights in the classroom. The diagram shows their model of the Sun heating Earth at the equator. How can the students change their model to represent how the Sun heats Earth in places where the climate is cold all year?

A) They can tilt the angle of the graph paper.
B) They can use graph paper with larger squares.
C) They can use a flashlight with a narrower beam of light.
D) They can move the flashlight farther away from the graph paper.

Wooden , walls ,doors ,support

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.