Astro 1 exam - Study guides, Class notes & Summaries

Astro 1 Exam 1 PSU (2024 / 2025) Actual Questions and Verified Answers, 100% Guarantee Pass

What is a light year? - distance that light travels in 1 year What is the closest star to Earth besides the Sun? (4.2 ly away) - proxima centauri What is the age of the universe? - 14 billion years What is our cosmic address? What is the Local Group? - Earth, solar system, milky way galaxy, local group, local supercluster Order of planets in our solar system - Mercury, venus, earth, mars, jupiter, saturn, uranus, neptune What is the fastest speed in the universe? - speed of light Typical ...

ASTRO 1 EXAM 3 QUESTIONS AND ANSWERS 2024

Astro 1 Exam 2 PSU | 100 Verified Questions with 100% Correct Answers | Updated for Academic Year Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. - What is the order of the planets with distance from the Sun? Venus - Which planet has the highest surface temperature? Jupiter - Which planet has the largest mass? Uranus - Which planet has the largest tilt of its spin axis? Mercury - Which planet has the largest temperature variations? Venus - Which planet rotates backw...

ASTRO 1 EXAM 1 PENN STATE QUESTIONS AND ANSWERS 2024

Astro 1 exam 1 Penn State 1 UPDATED ACTUAL Questions and CORRECT Answers Newton's first law of motion - CORRECT ANSWER- an object at rest or in motion in a straight line at a constant speed will remain in that state unless acted upon by a force Newton's second law of motion - CORRECT ANSWER- The acceleration of a body due to a force will be in the same direction as the force, with a magnitude inversely proportional to its mas

Astro 1 Exam 1 PSU Real exam questions and answers latest update

What causes day and night? - Rotation of Earth on its Axis How does the Sun appear to move in the sky in the course of a day? - East to West bc of Earth's rotation. The stars and planets move the same way, also bc Earth's rotation What happens to the Earth in one year? - It orbits the Sun one time Why do we have seasons? - Tilt of Earth's axis (not changing from Sun). The tilt is about 23 degrees How is the Earth's axis tilted when we have summer in the Northern hemisphere? - With the N...

what is the sun comprised of? - 73% hydrogen 25% helium why is the sun stable? - outward force of gas pressure; inward force of gravity Where does the gas pressure in the sun come from? - nuclear fusion reactions in the core at temperatures of 15 million degrees What is the diameter of the sun compared to earth? mass? luminosity (compared to 100W lightbulbs? - diameter-109x; mass-333,000; luminosity- 4 x 10^24 What percent of mass in the solar system comes from the sun? - 99.9% how long h...