Q.1: Pluto was recognised as ‘dwarf planet’ by the International Astronomical Union (IAU) in _____________.
a) August 2001
b) August 2005
c) August 2006
Q.2: A ___________ is a celestial body that orbits around a planet.
Q.3: The atmosphere of earth protects us from the harmful ultraviolet rays of the ________.
Q.4: __________ is the outermost layer of the earth.
Q.5: The inner core is a solid ball almost entirely made up of ________.
Q.6: The sun has a thick layer of atmosphere called the ________.
Q.7: At the centre of the sun, hydrogen changes into __________.
Q.8: Moon is at a distance of ________ km from the Earth.
Q.9: _________ are formed when solid bodies crash into moon’s surface.
Q.10: Vikram Sarabhai played an important role in planning the launch of India’s first satellite ___________ in 1975.
Q.11: To be eclipsed means to be __________.
Q.12: ___________ is the national space agency of India.
a) Skyroot Aerospace
Q.13: When the moon comes between the Earth and the sun, it blocks some parts of the sun. This is called a ________ eclipse.
Q.14: The first men to land on the moon were crew of the American space mission, __________.
c) Apollo 11
Q.15: ________________ became the first man to set foot on moon on July 20, 1969.
a) Neil Armstrong
b) Edwin Aldrin
c) Michael Collins
Q.16: When hydorgen changes into helium in sun’s core, it releases a large amount of heat and light energy which is together known as ___________ energy.
Q.17: Mantle of the earth is about _______ km thick.
Q.18: The moonlight we see is actually reflected ____________.
Q.19: The American astronauts of Apollo 11 spent _________ hours on moon and collected rock samples to bring back to the Earth.
a) one and a half
b) two and a half
Q.20: In 1965, __________ started Community Science Centre in Ahmedabad, so that science could be made more popular with children.
a) APJ Abdul Kalam
b) Pranab Mukherjee
c) Vikram Sarabhai
Q.21: The continents and oceans lie on the _________ layer of the Earth.
Q.22: During a partial solar eclipse, a part of ________ can be seen.
Q.23: The region of the Earth where _______ falls have a total solar eclipse.
Q.24: As the moon has no _______, the astronaut’s footprints will remain there forever.
Q.25: The mantle contains a lot of _________.