1. How did the geocentric model explain the retrograde motion of planets?
A. Earth moves faster in its orbit and passes the other planets.
B. The planets move backward when they get too close to earth.
C. The planets travel in circles as they move around earth in a circle.
D. Earth moves away from the planets, causing them to appear to move backwards.
4. Using Kepler's third law, how long does it take Saturn to orbit the sun given that its distance from the sun is 9.529 AU?
A. 4.45 years
B. 27 years
C. 29.4 years
D. 91 years
5. Ancient civilizations used astronomical objects to define time, including the number of days is a week. Why are there seven days in a week?
A. They could only see seven rings around Saturn.
B. Only seven objects changed position over time.
C. They could only see seven galaxies without using a telescope.
D. Only seven signs of the zodiac were indentified by ancient people.
6. Which of the following was the earliest solar system to exist?
A. Aristotelian
B. heliocentric
C. Copernican
D. Ptolemaic
8. By comparing the position of the sun and the shadows cast at noon on the summer solstice in two different cities, Eratosthenes was the first to determine,
A. The size of earth
B. The distance from earth to sun
C. The earth was round
D. The distance between the two cities
9. Kepler's three laws resulted from his careful analysis of _____ data, and we're not derived from a mathematical model.
A. Experimental
B. Hypothetical
C. Theoretical
D. Observational
10. How did ancient civilizations use a stick in the ground to find the direction north?
A. The shadow of the stick points north when the sun rises in the morning.
B. The shadow of the stick points north at approximately noon.
C. The shadow of the stick points north when the sun sets in the evening.
D. The shadow of the stick points north when the shadow is the longest.
Connections Academy Answers
___________________________
1) Which of the following did Galileo not observe through his telescope?
ANSWER: C - the rotation of the stars.
2) How did the geocentric model explain the retrograde motion of planets?
ANSWER: C - the planets travel in circles as the move around the Earth in a circle.
3) A(n) _____ describes the shape of a planet's orbital path.
ANSWER: B - ellipse
4) How did ancient civilizations use a stick in the ground to find the direction north?
ANSWER: B - The shadow of the stick points north at approximately noon.
5) By comparing the position of the sun and the shadows cast at noon on the summer solstice in two different cities, Eratosthenes was the first to determine what?
ANSWER: A - the size of the Earth
6) Which of the following was the earliest solar system model to exist?
ANSWER: A - Aristotelian
7) Using Kepler's third law, how long does it take Saturn to orbit the sun given that its distance from the sun in 9.529 AU?
ANSWER: C - 29.4 years
8) What did Copernicus theorize was at the center of the universe?
ANSWER: B - the sun
9) Kepler's three laws resulted from his careful analysis of ____ data, and were not derived from a mathematical model.
ANSWER: D - observational
10) Ancient civilizations used astronomical objects to define time, including the number of days in a week. Why are there seven days in a week?
ANSWER: B - Only seven objects changed position over time.
1. The geocentric model explained the retrograde motion of planets by suggesting that the planets move in circles around the Earth. According to this model, as the Earth passes a planet in its orbit, the planet appears to move backwards, creating the illusion of retrograde motion. The correct answer is C.
4. Kepler's third law states that the square of a planet's orbital period is proportional to the cube of its average distance from the sun. By using this law, we can determine the orbital period of Saturn given its distance from the sun. The correct answer is C, 29.4 years.
5. The reason why there are seven days in a week is not directly related to astronomical objects. The correct answer is D, only seven signs of the zodiac were identified by ancient people. However, it's worth noting that the seven-day week has been influenced by various cultural and religious factors throughout history.
6. The earliest solar system model to exist was the Ptolemaic system, named after Ptolemy, an ancient Greek astronomer. This model proposed that the Earth was at the center of the universe, with the other celestial bodies orbiting around it. The correct answer is D.
8. By comparing the position of the sun and the shadows cast at noon on the summer solstice in two different cities, Eratosthenes was able to determine the size of the Earth. He observed that the distance between the two cities could be measured by the difference in length of the shadows, allowing him to calculate the Earth's circumference. The correct answer is A, the size of the Earth.
9. Kepler's three laws of planetary motion were derived from extensive observational data, rather than from a pre-existing mathematical model. Kepler analyzed the precise measurements of planetary positions made by Tycho Brahe and used them to formulate his laws. The correct answer is D, observational.
10. Ancient civilizations used a stick in the ground as a makeshift sundial to find the direction north. By observing the shadow cast by the stick at different times of the day, they could determine the direction of the sun's movement and thereby determine the cardinal directions. The correct answer is B, the shadow of the stick points north at approximately noon.
and your answers are?
1.b 2.c 3.a. 4.c. 5.b. 6.b. 7.b. 8.d. 9.a. 10.c 100%
1.) C
2.) B
3.) B
4.) B
5.) B
6.) D
7.) A
8.) A
9.) 29.4 years
10.) C
Dylan's answers were actually correct... EXCEPT 9 was B; Eclipse (: SO 100% ANSWERS.
1. C
2. B
3. B
4. B
5. B
6. D
7. A
8. A
9. B
10. C