BCU English Test

What is the estimated weight of the meteorite that exploded over a city?

• 5,000 tons

• 10,000 tons

• 20,000 tons

• 15,000 tons

At what speed did the meteorite enter the atmosphere?

• 80,000 km/h

• 64,000 km/h

• 48,000 km/h

• 32,000 km/h

How wide was the meteorite that showered pieces of rock over Chelyabinsk, Russia?

• 10 metres

• 17 metres

• 15 metres

• 20 metres

What is the potential hazard to human existence according to most scientists?

• Volcanic eruptions

• Tsunamis

• Comets and asteroids

• Earthquakes

What is the estimated diameter of the object that exploded over a forest region, flattening about 80 million trees?

• 60 metres

• 50 metres

• 40 metres

• 30 metres

What is the equivalent force of the object that struck the Yucatan region of Mexico?

• 50 megatons

• 100 megatons

• 125 megatons

• 75 megatons

According to scientists, what will result in the complete destruction of complex life on Earth?

• Alien invasion

• Large asteroid or comet collision

• Nuclear war

• Global warming

What is the role of the planet Jupiter in keeping Earth safe from dangerous comets and asteroids?

• It absorbs them

• It scatters them away

• It creates a protective shield

• It destroys them

What is the visible night sky appearance frequency of bright comets?

• Once every 5 years

• Once every 10 years

• Once every 15 years

• Once every 20 years

What is the estimated diameter of an asteroid?

• Several miles

• Several kms

• Several meters

• Few feet