Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science chap 18
formation of the solar system
| Question | Answer |
|---|---|
| The hubble space telescope is carried back and forth into space on each space shuttle mission. A. ture B. false | false |
| What did ancient cultures base their calandars on? | The seasonal cycles of celestial objects |
| The time required for the moon to orbit once around the sun | month |
| the time required for earth to orbit once around the sun | year |
| the time required for earth for earth to rotate once on its axis | day |
| a system for organizing time | calendar |
| The ancient Egyptian calendar contained one 5-day month | true |
| Which ancient calendars were linked to the sun? A. Mayan C. Roman B. Julian D. Hebrew | Mayan, Egyptian, Hebrew |
| Why did Julius Caesar add 90 days to the year 45 B.C.? | There is an extra day every 4 years. |
| Leap year are necessary because all months do not have the same number of days. A. True B. False | false |
| Most countries use the calendar. A Gregorian C. Roman B. Julian D. American | Gregorian |
| Invented algebra and our modern number system | the ancient Arabs |
| The earliest recored of astronomical observations | nabta |
| made an accurate calendar based on skilled forcasting | the babylonians |
| could predict eclipses | the ancient chinese |
| used logic and geometry to explain eclipses and the phases of the moon | the ancient greeks |
| some stones in circles are aligned with the sunrise durnig the solstices | stonehenge |
| many buildings are aligned with celestial bodies during certain astronomical events | the maya |
| produced the worlds oldest existing portable star map | the ancient chinese |
| While Europe was in the dark ages, the arab culture continued to develop astronomy. A. True B. False | true |
| How did the earliest astronomers learn what they knew about the universe? | by learning and anolizing |
| How long did Ptolemy's Earth-centered theory remain the popular theory for the structure of the universe? A. 100 years C. 1,500 years B. 500 years D. 5,000 years | 1,500 years |
| Copernicus thought that the planets orbit and was the center of the universe. (Earth or the sun, Earth or the sun) | The sun, the sun |
| Explained that planets and moons stay in orbit due to gravity | Sit Isaac Newton |
| Stated that planets move in elliptical orbits around the sun | Johannes Kepler |
| used a mural quadrant to measure the positions of the planets and stars. | Tycho Brahe |
| was the first person to use a telescope to observe celestial bodies | Galileo |
| discovered sunspots | Galileo |
| Which planet did William Herschel discover in 1781? A. Uranus C. Mars B. Jupiter D. Pluto | Uranus |
| Which invention in the 1800s allowed astronomers to improve their observations of the sky? A. the telescope C. The telegraph B. photography D. filters | photography |
| Edwin Hubble discovered that the "fuzzy patches" observed by William Heschel were really other . | galaxies |
| How did ancient cultures name the stars in the sky? | Where the stars were pasitioned |
| If people in ancient cultures could see our moden sky, they would see the same patterns of stars that we do. A. Ture B.false | true |
| What are constellations? | Sections of the sky that contain recognizable star patterns |
| The ancient greeks contellation was the same as the Japanese contellation of the drum. | orion |
| the sky is divided into a total of constellations by modern astronomers. | 88 |
| Why do astronomers around the world use the same names for the constellations? | To make communication easier |
| The constellations that are visable in the sky are different in the spring and the fall. A.true B.false | true |
| Imaginary point directly over the head of the observer | zenith |
| position of a star in degrees north or south of the celestial equator | declination |
| imagary extension of earth's equator into space | celestial equator |
| angle between an object and the horizen | altitude |
| always 90 degrees from the zenith | altitude |
| where the sun appears on the first day of spring | vernal equinox |
| measure of how far east an object is from where the sun appears on the vernal equinox | fight ascension |
| line where the sky and earth appear to meet | horizon |
| Some stars located near earths poles can be seen year-round, at all times of night. What are these cstars called? | Circumpolar stars |
| Copernicus reasoned that the stars must be very far from planets because thier relative postions shift. A. true B. false | false |
| Look at the Physics connection. What does red shift tell us about other galaxies? | The universe must be expanding/ moving away. |
| A light-year is equal to the distance that light travels though space in year(s). | one |
| One light-year is about 9.46 trillion . | kilometers |
| What does figure 17 show you about the star in a constellation? A. they are spaced apart evenly B. They are fairly close together C.They are equal distance from earth D. They are very far away from each other | They are very far away from each other |
| most stars are smaller than earth A.true B. false | false |
| At what distance from earth would our entire solar system be visable from space? A. 100km C.150 light-years B.1,000,000 km D. 10 light-years | 150 light-years |
| The universe looks at a distance of 10 million light-years. | crowded |
| What do telescopes so with electromagnetic radiation? | The teloscope collects it and concentrate it |
| The simple telescope contains two lenses-an objective lens and a lens located in the of the tesescope. | eyepiece |
| As many as stars are visible in the sky without a telescope. | 6,000 |
Created by:
ENTG
Popular Science sets