Astr 100 - Study guides, Class notes & Summaries

ASTR 102 Midterm 2 | 100% Correct Answers | Verified | Latest 2024 Version A star has an apparent brightness of -2 and an absolute brightness of 1. What must be true? Select one: a. The star is further than 10 parsecs b. The star is at 10 parsecs c. The star is closer than 10 parsecs d. The star is close to exploding - c What is special about electromagnetic waves? Select one: a. We can see all of them b. They do not need a medium to travel c. They only exist near stars d. E...

_______ defines the particulars (wind, clouds, temperature, etc) at a place and time, while ______ is the long term average of these measurements. - ️️1. Weather 2. Climate A 20,000K temperature star emits _____ red light than a 2,000K temperature star. Less More - ️️More A circular orbit is a form of elliptical orbit with zero eccentricity. (A) True (B) False - ️️(A) True A comet entering the inner solar system from afar will __________. Form a tail and some time later for...

ASTR 102 Midterm Exam Questions | 100% Correct Answers | Verified | Latest 2024 Version The apparent motion of a foreground object relative to a distant background as the observers position changes? - Parallax When measuring parallax the distance between two observation points is called? - Baseline If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same, then? A. The night would be twice as long B. The night would be half as long C. The...

Which of the following statements about light focusing is not true? A) In a healthy eye, light is focused on the retina. B) Film should be placed at the focal plane in a camera. C) If you try to look at an image that is not formed at the focal plane, it will be blurry. D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. - D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. Suppose t...

2.9x10^7 is the same as - ️️29 million A galaxy contains - ️️Large amounts of gas, dust, and stars A hypothesis becomes a theory when - ️️repeated testing of its predictions does not disprove it. A solar eclipse that occurs when the moon's umbra does not reach Earth's surface is called an - ️️Annular solar eclipse A solar or lunar eclipse will occur when? - ️️any time the moon is new or full and near node According to Newton's laws, how does the amount of gravitationa...

ASTR 102 Quiz Questions | 100% Correct Answers | Verified | Latest 2024 Version We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it)...

According to Alfred Weneger, which of the following is evidence of Continental Drift? Select all that apply. a. Mass extinction at several points in Earth's history b. Ice Ages c. Similar glacial scrapes in different continents d. Steady Global Warming e. Impact craters scattered all around the world f. Tropical plant fossils in Greenland. - ️️c. Similar glacial scrapes in different continents f. Tropical plant fossils in Greenland. Auroras on planets are generated from... ...

DESCRIPTIVE ASTRONOMY (ASTR 103)| ASTRO NOTES UNIT 4|2024 QUESTIONS AND CORRECT ANSWERS|100%PASS

The apparent motion of a foreground object relative to a distant background as the observers position changes? - Parallax When measuring parallax the distance between two observation points is called? - Baseline If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same, then? A. The night would be twice as long B. The night would be half as long C. The year would be half as long D. The length of the day would be unchanged. - B. A long, thin cloud ...

D) the same no matter how or where you measure the object's weight. - The mass of an object is A) the same as the weight of the object. B) larger than the weight of the object. C) unrelated to the weight of the object. D) the same no matter how or where you measure the object's weight. A) halved. - If an object's velocity is halved, its momentum is A) halved. B) unchanged, C) doubled D) quadrupled E) dependent on its acceleration.