Question

modor
pretend youve found an old basketball and
tennis ball to use in your model.
which best represents the sun?
which best represents earth?
look at the statements below. rearrange the statements in order that will
best create a model of the day and night cycle.
statements
a. rotate the tennis ball
counter - clockwise.
b. tilt the tennis ball on
its axis.
c. place the basketball on
the table.
day and night model procedures
1.
2.
3.

Explanation:

• The Sun is much larger than the Earth. A basketball is larger than a tennis ball, so the basketball represents the Sun.
• The Earth is smaller than the Sun. A tennis ball is smaller than a basketball, so the tennis ball represents the Earth.
• To model day - night cycle:
• First, place the “Sun” (basketball) which is the source of light (in a model sense).
• Then, tilt the “Earth” (tennis ball) as the Earth has an axial tilt.
• Finally, rotate the “Earth” (tennis ball) counter - clockwise (as the Earth rotates counter - clockwise when viewed from above the North Pole) to show day - night changes.

Answer:

• Which best represents the Sun? Basketball
• Which best represents Earth? Tennis ball
• Day and Night Model Procedures:

1. C. Place the basketball on the table.
2. B. Tilt the tennis ball on its axis.
3. A. Rotate the tennis ball counter - clockwise.