PG1: Atmosphere and Ionosphere

What killed the dinosaurs?

• Taurine-based energy drinks

• Bad lunar energy

• Comet impact

• The funniest joke in the world

Which is the odd one out?

• 3

• 6

• 7

• 11

Where is the Kármán line definition of the edge of space?

• 100 km

• 80 km

• 500 km

• 118 km

Which layer is directly above the stratosphere?

• Mesosphere

• Thermosphere

• Troposphere

• Exosphere

In which of these regions does temperature increase with altitude?

• Troposphere

• Mesosphere

• Thermosphere

Which of these is (usually) coldest?

• Typical household freezer

• Svalbard on 6th June

• Atmosphere at 25 km

• Atmosphere at 250 km

Where is ozone concentration the greatest?

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

What is the major neutral species in the thermosphere at 300 km?

• Eurasian Pygmy Shrew

Which of these is photo-dissociation?

At approximately what altitude is the mesopause?

• 55 km

• 300 km

• 85 km

• 5 km