Test1-solutions

Test1-solutions - Name: Test 1 AST1002 Sec. 1 Feb 25, 2008...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Name: . Test 1 AST1002 Sec. 1 Feb 25, 2008 Instructions Fill in your name above. This test will be returned to you next week. On the bubble sheet, fill in information in the upper section: Instructor: Gershtein; Course: AST 1002; Section: 1 Fill in your name on the bubble sheet, last name first name. Don’t forget to fill in the appropriate bubbles. Use a No. 2 pencil. Each multiple choice question has one correct answer. Choose the most correct answer. For each question, fill in the appropriate bubble next to the question number. Also, circle your chosen answer on this test. Turn in both this paper and the bubble sheet. Remember the Honor Code: Anyone discovered to have cheated will fail this course. Useful information 1 hour = 3600 sec. 1 year = 3.16 x 10 7 sec. c = 3x10 8 m/sec = 3x10 5 km/sec n – nano = 10 -9 , μ - micro = 10 -6 , m – milli = 10 -3 , k – kilo = 10 3 , M – mega = 10 6 1 AU = 1.53x10 11 m = 1.53x10 8 km, 1 ly = 9.5x10 15 m = 9.5x10 12 km, K = o C + 273 P 2 = A 3 , F = GmM/r 2 , F = ma, G = 6.67x10 -11 Nm 2 /kg 2 , d = vt, E = hf = hc/ λ , f λ = c, v r = Δλ / λ α (arc sec) = 0.02 λ (nm)/D(in cm), M = f o /f e Circumference of a circle = 2 π r, Area(circle) = π r 2 , Area(sphere) = 4 π r 2 Volume(sphere) = (4/3) π r 3 1. Did you properly follow the above instructions? (You earn a point for bubbling your name/section in correctly) a. Yes. b. No. 2. In scientific notation 317,000 is a. 3.17x10 5 b. 3.17x10 10 c. 10 3.17 d. 3.17
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How many kilometers are in 5 light years (ly)? a. 5 b. 3.1415927 c. 4.75x10 13 d. 1.58x10 8 4. Which of these move faster in space: a. Radio waves b. X-rays c. Visible light d. All of the above move at the same speed 5. If you were writing a paper for scientific publication about a new star you observed, which coordinate system would you use? a. altitude and azimuth b. latitude and longitude c. polar coordinates d. right ascension and declination e. zenith and meridian 6. The main cause of the seasons on Earth is a. The varying distance between the Earth and the Sun b. The speed of the Earth around the Sun changes, and is fastest during the winter, so Earth spends less time in the sunlight c. The changing Moon position relative to the Sun d. The 23.5 degree tilt of Earth’s rotation axis with respect to ecliptic 7. The appearance of the planets moving in the wrong direction across the sky is known as a. elliptical orbits b. equinox period c. retrograde motion d. revolution e. synodic motion 8. The fact that the Earth has moved along its orbit around the Sun in the time it took to rotate 360 o is the reason for a. the difference between solar and sidereal days. b.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

Test1-solutions - Name: Test 1 AST1002 Sec. 1 Feb 25, 2008...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online