Which one of the following statements best describes the Sun?
generates energy by nuclear fusion
located 10 AU from Earth
orbiting the Solar System
located in the centre of the Milky Way
In the organization diagram below in which area the term: Polaris would appropriate fit?
Yellow area= Solar system
Red area=Milky Way
Light Blue= Universe
Which of the following sequences objects is in the correct order of increasing distance?
Venus, Saturn, Moon, Andromeda galaxy, Polaris
Moon, Venus, Saturn, Polaris, Andromeda galaxy
Polaris, Andromeda galaxy, Moon, Saturn, Venus
Andromeda galaxy, Saturn, Venus, Polaris, Moon
The nearest star to our solar system is alpha Centauri at 4.0 ´ 1016 m (4.3 ly away). The diameter of the sun is 1.4´ 109 m. How many suns would it take to line up adjacent to each other in order to reach alpha Centauri?
5.6´10^6
5.6´10^8
2.8´10^25
2.8´10^7
There approximately 100 billion stars in our galaxy. If there 100 billion observable galaxies in our universe, what is a reasonable estimate for the total number ion the universe?
1.0´10^22
2.0´10^20
1.5´10^15
1.0´10^24
The distance to a super cluster galaxy might be
100 Mpc
10 Kpc
120 Ly
10 AU
Approximately 100 Earths would fit inside Jupiter. This Jupiter’s radius must be …………….times larger that Earth’s radius.
100
12
10
1000
A spherical particle in the ring of Saturn has radius of about 1m. The surface area of the particle in the area of radiation flow is
125 m2
3.14 m2
12.6 m2
14 m2
A spherical particle in the ring of Saturn has radius of about 1m. The cross sectional area of the particle in the area of radiation flow is:
If the landing lights in Denver airport were switched on, then in one second these photons travel to:
New York (1580 km)
Alpha Centauri (40,000,000,000 000 km)
The Sun(150,000,000 km)
Moon (384,000 km)
Sirius the brightest star in the sky is about 9 ly away. If the speed of light became half of its present value, how far would Sirius be?
9 ly
18 ly
4.5 ly
32 ly
The Andromeda galaxy is about 2,000,000 ly away. Therefore light started its travel
1,000,000 y
2,000,000 y
Just a second ago
Can’t be determined
In the diagram, what is the diameter of Mercury?
about 240 km
about 2400 km
about 24,000 km
about 240,000 km
What is 5.7×107 the same as?
5.7 million
57 thousand
570 thousand
57 million
If the distance from the Sun to the Earth is represented by roughly 15 metres, then what would the distance from the Earth to the Moon on the same scale be?
about 30 metres
about 10 metres
about 1 metre
smaller than the width of your hand
Approximately how many times larger than the diameter of a typical planet (the Earth) is the diameter of a typical star (the Sun)?
10 times
100 times
1000 times
10,000 times
What does the Solar System contain?
the Sun, its planets, and some smaller bodies
the Sun, galaxies, planets, and stars
the Sun, planets, moons, and stars
the Sun, planets, asteroids, and galaxies
What is the approximate diameter of the Earth?
1 AU
13,000 light-years
13,000 kilometres
1,000,000 kilometres
Which of the following is no longer considered a major planet?
Mercury
Uranus
Pluto
Saturn
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