Download Test yourself on the crossword! Increase your knowledge

Test yourself on the
crossword!
To test how much you have learnt after reading this booklet, fill in the
crossword below. Good Luck!!
1
6
7
2
8
3
Increase your
knowledge about
Uranus
in 10 minutes
4
5
9
Across
Down
1 What is Uranus’ atmosphere mostly
composed of? hydrogen
6 In Greek Mythology, Uranus was
thought to be dominated by the power of
which planet? mars
7 The name of Uranus’ brightest ring.
epsilon
8 Which planet has a very similar atomosphere compostition to Uranus?
2 Complete this sentence: Uranus’
rings are made of large ______ .
3 Uranus is part of the ___ _______
category.
4 How does Uranus get its blue-green
colour?
5 Why does the north pole get 42
years of sunlight while the south pole
gets 42 years of darkness? Hintbecause it lies on its ____ side
6 This is what Uranus’ core is made
of.
9 What planet can you see with your
naked eye?
Created by Professor C. Ha.
Statistics and Data
10 Interesting Facts about Uranus!
1) Uranus is the seventh planet from the Sun and is the third largest in
the solar system. It was discovered by William Herschel in 1781. You
can see Uranus just with your eyes. At magnitude 5.3, Uranus is just within the
brightness scale that a human eye can perceive.
A Graph to Show the relationship
between the distance from the sun and
the temperature of the planet
2) The blue-green appearance of Uranus’ atmosphere results from methane and
high-altitude photochemical smog. This gas absorbs red wavelengths leaving the
blue colour seen here.
4) Uranus has a strong magnetic field. The magnetic field has trapped highenergy, electrically charged particles. These particles travel back and forth between the magnetic poles, they send out radio waves.
5) Uranus is the coldest planet, it’s internal heat appears markedly lower than that
of the other giant planets; in astronomical terms, it has a low thermal flux.
6) Uranus has rings, they are very dark and are composed of fairly large particles
ranging up to 10 meters in diameter in addition to fine dust.
O
C)
500
Average Temperature (
3) Since Uranus lies nearly on its side, its North Pole gets 42 years of daylight
while the South Pole gets 42 years of darkness.
600
400
300
200
100
0
-100
0
1000
2000
3000
4000
5000
6000
7000
-200
-300
7) Uranus' atmosphere is about 83% hydrogen, 15% helium and
2% methane. It is very similar to Neptune’s atmosphere composition. .
8) The gravity on Uranus is only 91% of the gravity on Earth.
This is because it is such a large planet (the gravitational force a planet exerts
upon an object at the planet's surface is proportional to its mass and to the inverse of its radius squared).
9) The gravity on Uranus is only 91% of the gravity on Earth because it is such a
large planet- gravity in proportion with mass.
10) Uranus’ astronomical symbol is a hybrid of the symbols for Mars and the Sun
because Uranus was the Sky in Greek mythology dominated by the combined powers of both the Sun and Mars.
Average distance from the sun (millions of km)
In this graph, you are able to see a weak and negative correlation
between the distance from the sun and the temperature of the
planet. However, you can see that there is an anomaly in the
graph (Mercury), which is closest to the sun but colder than Venus, which is only second closest to the sun. This is because Mercury has a very thin and unstable atmosphere. Mercury doesn’t
have the gravity to keep gases trapped around it to make an atmosphere. Due to the high temperature, solar winds, and the low
gravity gases keep escaping the planet, which is why the temperature of Mercury keeps changing.