Astro Quiz 2019 ROUND 3 RULES You only

Astro. Quiz 2019 ROUND 3

RULES • You only have 60 seconds to answer each question. • You are allowed to discuss amongst yourselves as team members • Calculators may be used if needed. • No internet is to be used, therefore the use of cellphones is also prohibited. • The judge’s decision is final.

QUESTION 1 Which of the following is false about Proxima Centauri, the 2 nd closest star to Earth? A. B. C. D. It is a red dwarf and discovered in 1915 It is 4, 2 light years away from Earth It is a red dwarf and discovered in 1815 It is part of the three star Alpha Centauri system

QUESTION 2 One can jump much higher on Earth than on the Moon. A. True B. False

QUESTION 3 The reason why one can jump much higher on the Moon than on Earth is because _____ on the Moon. A. B. C. D. there is no atmosphere. the magnetic field is weaker. there is no water. gravity is weaker.

QUESTION 4 During which Moon phase can we experience a total solar eclipse? A. B. C. D. Full Moon New Moon First Quarter Last Quarter

QUESTION 5 Why do stars twinkle? A. Because they get smaller and bigger B. Because of turbulence in our atmosphere C. Because they fuse different amounts of hydrogen D. Because their magnetic field varies in strength

QUESTION 6 Why has the Universe cooled down to about 3 degrees above absolute zero? A. B. C. D. There were more stars earlier on There were fewer stars earlier on It has become bigger It is due to climate change

QUESTION 7 Which pair of planets below, represent the smallest planets within their own groups? A. B. C. D. Mercury & Saturn Jupiter & Earth Neptune & Mercury & Uranus

QUESTION 8 At what speed does Earth go around the Sun? A. B. C. D. 9, 8 km/s 11, 2 km/s 29, 8 km/s 23, 9 km/s

QUESTION 9 Big stars live longer, because they have more hydrogen to fuse than small ones. A. True B. False

QUESTION 10 A starburst galaxy is … A. a galaxy with stars continually bursting. B. a galaxy that produces bursts of intense light in a regular way. C. a galaxy with very high star birth rate. D. None of the above

QUESTION 11 One of the definitions of a Blue Moon is that it is a second full moon in a month. When in 2015 did we have a blue moon? A. B. C. D. May June July August

QUESTION 12 Why does a star at the end of its life collapse? A. Its electrons generate a massive pressure B. There is no heat pressure any more C. The magnetic field has become stronger D. The electric field has weakened

QUESTION 13 Constellations are … A. clusters of stars very near each other in space. B. groupings of planets in the sky. C. patterns of stars in the sky. D. close associations of stars and visible planets.

QUESTION 14 All the stars in a constellation are about the same distance from Earth. A. True B. False

QUESTION 15 How many days are there between the waxing quarter and waning quarter Moon? A. 29 B. 30 C. 14 D. 31

QUESTION 16 Which celestial body has been selected for possible exploration as it has features that resemble that of the Earth? A. B. C. D. Neptune Pluto Mars Uranus

QUESTION 17 Light travels at a speed of … A. B. C. D. 300 000 m/s 30 000 km/s 300 000 m/s 30 000 m/s

QUESTION 18 What is the most abundant gas found in Venus' atmosphere? A. B. C. D. Nitrogen Hydrogen Oxygen Carbon Dioxide

QUESTION 19 The most abundant gas found in Earth’s atmosphere is … A. B. C. D. Carbon Dioxide Nitrogen Hydrogen Oxygen

QUESTION 20 Which of the following is a gas planet and has at least 27 moons? A. B. C. D. Venus Mercury Neptune Uranus

QUESTION 21 Which of the following is an inner planet and is usually referred to as morning or evening star? A. B. C. D. Mercury Neptune Venus Uranus

QUESTION 22 The largest optical telescope in Southern Africa is the … A. B. C. D. Hubble Space Telescope Innes Telescope South African Large Telescope High Energy Stereoscopic System

QUESTION 23 What is the name of the South African Square Kilometre Array forerunner? A. B. C. D. Pathfinder Explorer Meer. KAT Square Kilometre Array

QUESTION 24 Why do we not have lunar or solar eclipses every month? It is because … A. we cannot see the Moon everyday of the month. B. the Earth's orbit around the Sun is not in the same plane as the Moon's orbit around the Earth. C. of the speed at which the Moon is orbiting the Earth. D. of the speed at which the Earth is orbiting the Moon.

QUESTION 25 The second nearest star to us after the Sun is Proxima Centauri. What is the third nearest star to us? A. Barnard’s Star B. Sirius C. Antares D. Alpha Centauri

QUESTION 26 Of the five officially recognised dwarf planets in our solar system, Pluto is the largest, followed by … A. B. C. D. Eris, Haumea, Makemake, Ceres Eris, Ceres, Makemake, Haumea Eris, Makemake, Haumea, Ceres

QUESTION 27 During a total solar eclipse the Moon’s shadow causes a narrow path of total darkness across the Earth. What is this path of total shadow called? A. B. C. D. Penumbra Corona Umbra Luna

QUESTION 28 Proxima Centauri is approximately 4, 22 light years away from the Earth. How far is it in km given that 1 light year = 9, 46 x 1012 km? A. B. C. D. 2, 241 x 1013 22, 41 x 1012 3, 992 x 1013 39, 92 x 1012

QUESTION 29 Whilst on Earth the Sun rises in the east and sets in the west, on Venus … A. we will never know from where the Sun sets and rises because of the planet’s thick atmosphere. B. the Sun also rises in the east and sets in the west. C. there is no sunrise or sunset because Venus does not rotate around its axis. D. the Sun rises in the west and sets in the east.

QUESTION 30 A solar eclipse occurs during the night whilst a lunar eclipse occurs only during the day. A. True B. False

THANK YOU FOR PARTICIPATING GOOD LUCK TO ALL!