Gr 9_Space Physics

What is the name of the planet in our solar system that is closest to the Sun?

• Mars

• Venus

• Jupiter

• Mercury

Which planet is known as the 'Red Planet'?

• Mars

• Venus

• Saturn

• Jupiter

What is the largest planet in our solar system?

• Saturn

• Neptune

• Mars

• Jupiter

What is the name of the galaxy that contains our solar system?

• Andromeda

• Milky Way

• Pleiades

• Orion

What is the process by which a star produces energy?

• Chemical reaction

• Nuclear fission

• Nuclear fusion

• Photosynthesis

What is the name of the closest star to Earth?

• Proxima Centauri

• Alpha Centauri

• Betelgeuse

• Sun

What is the phenomenon where light from a star is blocked by another object in space?

• Blackout

• Shadowing

• Occultation

• Eclipse

A space station orbits the Earth at a distance of 7000 km from the Earth’s centre. It makes 15 orbits in every 24-hour period. What is the speed of the space station in its orbit?

• 2900 km /h

• 4400 km /h

• 8800 km /h

• 27 000km / h

Which nuclear reaction powers a stable star?

• nuclear fission of nuclei producing hydrogen

• nuclear fission of a uranium nucleus into a krypton nucleus and a barium nucleus

• nuclear fusion of a krypton nucleus and a barium nucleus into a uranium nucleus

• nuclear fusion of hydrogen nuclei producing helium

Which stages in the life cycle of a star are listed in the order that they occur?

• interstellar dust cloud -> stable star -> protostar

• protostar -> red giant -> stable star

• red giant -> white dwarf -> protostar

• stable star -> red giant -> white dwarf