 - 1. The circumference of the Earth at the equator is about
A) 6.000 km B) 300.000 km C) 40.000 km
 - 2. The age of the Universe is estimated in about
A) 14.000 millions of years B) 15.000 years C) One million of year
 - 3. The solar system has ____ planets
A) 8 B) 12 C) 7 D) 9
 - 4. The prefix geo means..
A) Sol (Sun) B) Estrella (star) C) Luna (Moon) D) Tierra (Earth)
 - 5. The prefix helio means...?
A) Estrella (star) B) Tierra (Earth) C) Sol (Sun) D) Luna (Moon)
 - 6. Match the concept Geocentric with one of the next scientists
A) Copernico B) Galileo C) Newton D) Ptolomeo
 - 7. Match the concept heliocentric with one of the next scientists
A) Ptolomeo B) Copernico C) Galileo D) Arquimedes
- 8. The theory that affirm the Universe was created by a great explosion at the beginning of the time is known as...
A) The Atomic theory B) The Kinetic theory C) The Big Bang theory D) The Quantum theory
 - 9. You are doing it very well. Encourage. Go ahead !
Write down your: * Birthday date (day-month)
 - 10. The speed of the light in the vacuum is...
A) 340 m/s B) 1000 km/h C) 40.000 km/h D) 300.000 km/s
 - 11. The space traversed by light during one year is called
A) One astronomic unit (A.U.) B) One light-year C) Light speed D) One match-year
 - 12. If light travels at 300,000 km per second, how much (in minutes) the sunlight takes to reach the earth surface?
DATA: Distance Sun-Earth=150 millions of km
A) About 90 minutes B) About 900 minutes C) About 9 minutes
 - 13. Our galaxy is know as...
A) Andromeda B) Black hole C) Orion D) The milky way
 - 14. The sun's energy comes from _______ fusion reactions
A) Carbon (C) B) Helium (He) C) Hidrogen (H) D) Uranium (U)
 - 15. It is estimated that the temperature inside the sun (in the core) reaches...
A) 300.000 ºC B) 40.000 ºC C) 15.000.000 ºC D) 6.000 ºC
 - 16. The motion of a planet around its AXIS is called...
A) Rotation B) Turn C) Revolution D) Traslacion
 - 17. The motion of a planet around the SUN is called...
A) Revolution B) Turn C) Traslation D) Rotation
 - 18. Mercury, Venus, Earth, Mars are rocky planets and all of them are called...
A) Inner planets B) Asteroids C) Outer planets D) Small planets
 - 19. Jupiter, Saturn, Uranus and Neptune are liquid or gaseous and all of them are called...
A) Big planets B) Inner planets C) Astronomic planets D) Outer planets
 - 20. All the planets except _________ and ________ have satellites (one or more)
A) Mars and Venus B) Saturn and Jupiter C) Mercury and Venus D) Uranus and Neptun
 - 21. The nearest star to Earth (apart from the sun) is called _______
A) Betelgeuse B) Orion C) Andromeda D) Proxima Centauri
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