earth

How many oceans do we have

What would you name a brand-new, record-breaking observatory?

True model of Earth

• Globe

• Map

• None of these

• Mercury

Where is Arecibo Observatory located?

• Mexico

• Brazil

• American Samoa

• Puerto Rico

Earth 🌍 has _________.

• Oxygen

• Venus

• Sun

Which of the following is NOT an accomplishment of the Very Large Telescope facility?

• Most scientific papers from telescope research

• First direct image of an exoplanet

• Tracking individual stars moving around a supermassive black hole

• Observing afterglow of the furthest-known gamma-ray burst

Of the top 10 highest telescopes, how many are in Chile?

• 9

• 7

• 6

• 5

What is the world's largest single-aperture optical telescope?

• Keck 2

• Hoppy-Eberly Telescope

• Gran Telescopio Canarias

• Very Large Telescope UT1

Which layer of Earth would have the greatest density?

• upper mantle
• lower mantle
• inner core
• outer core

Hydrosphere belongs to

• Water

• Air

• Land

• Life