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Physics & Astronomy
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Horizons Exploring the Universe Study Set 1
Exam 1: Here and Now
Path 4
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Question 81
Multiple Choice
64,200,000,000 is equal to
Question 82
True/False
Our universe is the planets orbiting the Sun, the Sun, and all the asteroids and comets in between and around our system.
Question 83
Multiple Choice
If the light takes 8 minutes to reach Earth from the Sun and the nearest star is 4.7 ly from the Sun, what is the distance from the Sun to the nearest star in astronomical units?
Question 84
Multiple Choice
Which sequence is correct when ordered by increasing size?
Question 85
True/False
The average distance from Earth to the Sun is 1 AU.
Question 86
True/False
The solar system is larger than the Milky Way Galaxy.
Question 87
Short Answer
A(n) ____________________ is a collection of billions of stars.
Question 88
Multiple Choice
Assume the size of the Sun is represented by a baseball with the Earth is about 15 meters (150 million km or 8 light minutes) away. How far away, to scale, would the nearest stars to the Sun be? Choose the closest answer.
Question 89
Essay
Assume a textbook shows a diagram of the solar system on, say, a standard notebook-sized sheet. The orbits of eight planets are sketched around the Sun at the center. The planets and orbits are drawn large enough that features like continents on Earth or the rings of Saturn are clearly visible. The Sun is drawn large enough that sunspots are clearly visible. Discuss what is wrong or right with this diagram.
Question 90
Multiple Choice
Choose the best answer. The Milky Way Galaxy
Question 91
Multiple Choice
Which of the following is ordered correctly from largest to smallest planet?
Question 92
Multiple Choice
If distance is speed × time and light takes 8 minutes to travel from the Sun to Earth and over 4 hours to travel from the Sun to the planet Neptune, what is the distance from the Sun to Neptune?
Question 93
Multiple Choice
If the distance from the Sun to the Earth is represented by roughly 15 meters, then the distance from Earth to the Moon on the same scale would be
Question 94
Essay
Draw a schematic (not to scale) diagram showing the Sun, the Earth circling around it, and the other seven planets with labels for each orbit.
Question 95
True/False
The Big Bang is a point in space.
Question 96
Multiple Choice
Assume a 100-yard football field represents the 14-billion-year history of the universe with one end as the origin and the other end representing the present. The existence of human beings will extend from ____ to the present "goal line."