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#1. Which of the following octopus facts is false?
Octopuses have gills, not lungs. They can live for a few minutes out of water, but they don’t live in trees.
#2. In maths, 3 of these terms describe extreme values. Which of the following is NOT a mathematical term?
Cardamum (also commonly spelt cardamom or cardamon) is a spice made from the seed pods of various plants in the ginger family.
#3. Diamond scores 10 on Moh’s scale. But what does Moh’s scale actually measure?
Moh’s scale of mineral hardness is measured by seeing which minerals will scratch others.
#4. Is 0 even or odd?
When you divide 0 by 2, you get no remainder. That means 0 is even!
#5. In 1967, Jocelyn Bell discovered something that sent out pulses of radio waves, but what was it?
Pulsars are spinning neutron stars that send out pulses of radio waves.
#6. Barry Allen – The Flash – is said to be able to run at Mach 3.3. If that was possible, how fast would that be in kilometres per hour (km/h)?
It varies with altitude and temperature, but Mach 1 is the speed of sound in air. That’s approximately 1,235 km/h (i.e. 343 metres per second). Mach 3.3 is 3.3 times the speed of sound in air, which is 4,075 km/h.
#7. According to astronauts, space stinks. What does it smell of?
Some astronauts have likened the smells of space to walnuts and brake pads.
#8. A triplane has 3 wings, but how are they arranged?
Triplanes, such as the Red Baron’s Fokker triplane, stack their wings vertically. This gives them lots of lift, but they can’t go very fast.
#9. What temperature is the middle of a bolt of lightning?
It’s very hard to measure the temperature inside a lightning bolt, but scientists think they reach about 20,000 °C, which is about 3 times hotter than the surface of the Sun!
#10. Which of these planets is known for the beautiful rings around it?
Saturn is known for its rings made up of billions of small chunks of rock and ice, plus other materials such as dust.
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