Use this paragraph: In a scale model of the solar system, the sun is placed at the center and the planets are shown orbiting in circles around it. Mars is 1.5 AU away from the sun and in the model, it appears at 30 cm from it which means that 1 AU = 20 cm. Likewise, Neptune is 30 AU away from the sun.
What is the maximum possible distance that can be drawn between Mars and Neptune in the scale model? Hint: Two planets are as far apart as possible when they are on directly opposite sides of the sun from each other. Draw a picture with the planets as far apart as possible.
(1 point)
Responses
630 cm
630 cm
1.5 cm
1.5 cm
570 cm
570 cm
28.5 cm
The correct answer is 630 cm. Two planets in the scale model would be as far apart as possible when they are on directly opposite sides of the sun from each other. So, if Mars is 30 cm away from the sun and is as far as possible from Neptune, which is 30 AU away, we can calculate the maximum distance by multiplying 30 AU by the scale factor of 20 cm/AU. 30 AU * 20 cm/AU = 600 cm. Adding the 30 cm distance between Mars and the sun, we get a maximum distance of 630 cm.
A human-operated spaceship reaches the moon in 3 days. The moon is about 386,400 km from Earth. Mars, our closest planetary neighbor, is, at its closest, about 140 times farther away from us than the moon if Mars stays in place. Assuming a very simple model of the solar system, about how long would it take that same spaceship to reach Mars?(1 point)
Responses
about 1 year
about 1 year
about 22.5 years
about 22.5 years
about 2.5 years
about 2.5 years
about 7.5 years
The correct answer is about 7.5 years. If the spaceship reaches the moon in 3 days and the moon is approximately 386,400 km away, we can use this information to estimate the distance to Mars. Since Mars is about 140 times farther away from Earth than the moon, we can multiply 386,400 km by 140 to get the estimated distance to Mars, which is 54,096,000 km.
Now, if the spaceship is traveling at a constant speed, we can use the distance and time relationship to estimate the time it would take to reach Mars. Assuming the spaceship maintains the same speed, the time it takes is proportional to the distance traveled. Comparing the distance to Mars (54,096,000 km) with the distance to the moon (386,400 km), we can set up the following proportion:
Time to reach Mars / 3 days = 54,096,000 km / 386,400 km
Simplifying, we find:
Time to reach Mars = (3 days) * (54,096,000 km / 386,400 km) = 7.5 years
Therefore, it would take the spaceship about 7.5 years to reach Mars.
Solar System Distances Quick Check
3 of 43 of 4 Items
Question
Use the diagram to answer the question.
An illustration shows the sun and the eight planets. The planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
What is the main problem with this model if it were going to be used to study the dimensions of the solar system?
(1 point)
Responses
The planets are depicted in different colors.
The planets are depicted in different colors.
The planets are represented in different sizes.
The planets are represented in different sizes.
The planets are shown as having different shapes.
The planets are shown as having different shapes.
The planets are placed at the same distance from each other.
The main problem with this model if it were going to be used to study the dimensions of the solar system is that the planets are placed at the same distance from each other.
so whatts the answers
The correct answer is: The planets are placed at the same distance from each other.
Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)
Responses
AU is used in astronomy, while km is used in physics.
AU is used in astronomy, while km is used in physics.
There are no km in outer space, only AU.
There are no km in outer space, only AU.
AU is used for spacing, while km is used for length.
AU is used for spacing, while km is used for length.
Large distances are easier to express in AU than in km.
The correct answer is: Large distances are easier to express in AU than in km.
Which of the following were precedents that George Washington set during his presidency? Select all that apply.
(1 point)
Responses
He established a judicial system of nine justices that is still in place today.
He established a judicial system of nine justices that is still in place today.
He chose well-known leaders to run his executive departments and serve as his advisors.
He chose well-known leaders to run his executive departments and serve as his advisors.
He established a Tax and Tariff cabinet position.
He established a Tax and Tariff cabinet position.
He chose to not run for a third term.