Comparative Diameters of the Planets and Sun
Solar System Body Diameter (relative, if Earth = 1)
Sun 109
Mercury .38
Venus .95
Earth 1
Mars .53
Jupiter 11.19
Saturn 9.40
Uranus 4.04
Neptune 3.88
Ms. Garcia's science students are studying scale models. For her science project, Sarah has decided to make a scale model of the solar system. Sarah conducted some research to help her with the diameters of the planets and Sun in her model and found the table you see above. Ms. Garcia has instructed her students that a model of the solar system MUST include a Sun with a diameter of 1 meter. What would be the diameter of Sarah's Earth if the Sun is this size?
Responses
A .92 cm.92 cm
B 1.09 cm1.09 cm
C 9.2 cm9.2 cm
D 109 cm
To find the diameter of Sarah's Earth in her scale model, we need to compare the diameter of the Earth to the diameter of the Sun.
According to the table, the diameter of the Sun is 109 times larger than Earth.
Since Sarah's model has a Sun with a diameter of 1 meter, we can set up a proportion to find the diameter of her Earth:
1 meter / 109 = x (diameter of Earth in her model) / 1
Simplifying the proportion, we get:
x = 1 / 109
This means that Sarah's Earth would have a diameter of 1 / 109 meters in her model.
Converting this to centimeters, we get:
1 / 109 meters = 0.00917 meters
Therefore, Sarah's Earth would have a diameter of approximately 0.92 cm in her model.
The correct answer is: A) 0.92 cm