NATIONAL SPACE DAY QUIZ 8-9

Which planet has the strongest gravitational pull?

• Earth
• Saturn
• Jupiter
• Neptune

The speed needed to escape Earth’s gravity is called:

• Orbital speed
• Rotational speed
• Escape velocity
• Terminal velocity

What is the escape velocity of Earth?

• 5 km/s
• 8 km/s
• 11.2 km/s
• 15 km/s

Who was the first human in space?

• Neil Armstrong
• Yuri Gagarin
• Alan Shepard
• Valentina Tereshkova

Which Indian satellite is fully dedicated to astronomy?

• INSAT-3C
• Astrosat
• Kalpana-1
• Cartosat-2

Which law explains why planets revolve around the Sun in elliptical orbits?

• Newton’s First Law
• Kepler’s First Law
• Newton’s Third Law
• Kepler’s Third Law

Which is the densest planet in the solar system?

• Earth
• Mercury
• Jupiter
• Venus

What is the main component of the Sun?

• Oxygen
• Helium
• Hydrogen
• Carbon

Which country was the first to send a satellite into space?

• USA
• Russia (Soviet Union)
• China
• India

Name the first artificial satellite.

• Explorer 1
• Sputnik 1
• Aryabhata
• Voyager 1