Lab 2 Questions

1. Look in your textBook for DATA of each planet. Place Density for each planet and state its surface temperature. Mercur y Venus Earth Mars Jupiter Saturn Uranus Neptun e pluto Place Density 5.34 g/cm cubed 5.24 g/cm cubed 5.51 g/cm cubed 3.93 g/cm cubed 1.33 g/cm cubed 0.7 g/cm cubed 1.27 g/cm cubed 1.67 g/cm cubed 1.88 g/cm cubed Surface Temp. degrees celsius 430 475 15 -153 -238 -178 -195 -200 -226 to -245 2. How many times larger is Jupiter's diameter than the Earth's? (UseED values from page-1) A: Jupiter has an ED of 11 meaning It has a diameter 11 times greater in size than the earth. 3. The volume of a planet is proportional to its diameter cubed (D 3 ). Take the result of question 2 and cube it to see how many Earths would fit inside of Jupiter. Show your work, and do math. A: 11 x 11 = 121 x 11 = 1331 so, 1331 Earths would fit inside Jupiter. 4. Use a similar calculation to find how many Earths would fit inside the Sun. Show your work! A: 108 x 108 = 11664 x 108 = 1259712 so, 1259712 earths could fit into the sun. 5. A jet airplane typically travels at a speed of about 600 mil es per hour, how long would It take, if possible, to fly at that speed from the Sun to the Earth? (Use the actual, not scale, distance.) Give your answers in years. Hint: Use the distance in miles. There are 93,000,000 miles per AU. Time in hours is the

distance in miles divided by the speed in mph. The time in years is the time in hours divided by both 24 hours per day and then by 365 days per year. Show your work! 93 million divided by 600 mph = 1,55000 divided by 24 hours = 6458.3333 divided by 365 days = 17.6940639269 Years. Time (in years) to fly from Sun to Earth __ 17.6940639269 __ Years __________ 6. Repeat step 5 for flying from Earth to Pluto. Show your work! A: 40 AU - 1 AU = 39 AU, 93 million x 39 = three billion six hundred and twenty seven million divided by 600 mph = six million forty five thousand divided by 24 hours = two hundred fifty-one thousand eight hundred and seventy five divided by 365 days = 690.068493151 Years. Time (in years) to fly from Earth to Pluto ___ 690.068493151 Years ___________ 7. The star nearest to our Sun is Alpha Centauri, which is 4.3 light years away. A light year is the distance that light travels in one year. 1- light year is about 9,500,000,000,000 kilometers. How many astronomical units (AU) is it to Alpha Centauri? Show your work, not just only the result. 9,500,000,000,000 km times 4.3 light years = 4.085e+13 km divided 1.6092344 (to convert to miles) = 2.5384742e+13 miles divided by 93 million = 272954.214643 AU 8. On a scale model (1AU = 7m), about how far would you have to walk to put a tennis ball the right distance away from the Sun, to stand for Alpha Centauri? Show your work, not just only the result. 272954.214643 AU divided by 7 = 38993.4592347 Give your answer in meters:___ 38993.4592347 m_______ 38993.4592347m divided by 1000 (to convert into km) = 38.9934592347km