Science Questions

What tool is commonly used by stargazers to identify and locate stars and other celestial objects in the night sky?A) TelescopeB) CompassC) SextantD) Star chart or star map

What characteristic of a star is determined by its mass and is the most crucial factor in determining its evolution and ultimate fate?A) TemperatureB) LuminosityC) Spectral typeD) Initial mass

What type of telescope is the Hubble Space Telescope?A) Radio telescopeB) X-ray telescopeC) Infrared telescopeD) Optical telescope

What is the primary factor that determines the life cycle and characteristics of a star?A) Its distance from other starsB) Its color and appearance in the night skyC) Its age at the time of formationD) Its initial mass at the time of formation

What is the imaginary line in the sky that runs from north to south and divides the celestial sphere into the northern and southern hemispheres?A) EquatorB) Tropic of CancerC) MeridianD) Celestial equator

Which type of star is the most massive and luminous, but also the shortest-lived, with a spectral classification of "O" or "B"?A) White dwarfB) Red giantC) Main sequence starD) Blue supergiant

Which of the following is the largest group of stars that form recognizable patterns in the night sky, as seen from Earth?A) ConstellationsB) GalaxiesC) NebulasD) Planets

The Hubble Space Telescope has captured images and data from various objects in space. What is the primary purpose of these observations?A) Studying the Moon's surfaceB) Searching for extraterrestrial lifeC) Exploring distant galaxies and starsD) Observing weather patterns on other planets

Which type of star is characterized by a stable and balanced state, where energy produced by nuclear fusion in its core balances the energy radiated from its surface?A) Red dwarfsB) Yellow dwarfsC) Red giantsD) Main sequence stars

What type of star is formed when a high-mass star exhausts its nuclear fuel and undergoes a powerful explosion?A) Red dwarfB) Black holeC) Neutron starD) Supernova

When a star like the Sun exhausts its nuclear fuel and expands, shedding its outer layers, it becomes a:A) Black holeB) Neutron starC) Red giant

What is the fate of a low-mass star after it sheds its outer layers in a planetary nebula?A) It becomes a neutron star.B) It collapses into a white dwarf.C) It explodes in a supernova.D) It forms a black hole.

The Hubble Space Telescope's ability to see distant objects and phenomena in space is mainly due to its lack of interference from:A) Space debrisB) GravityC) Earth's atmosphereD) Solar radiation

Which factor primarily determines the duration of a star's life on the main sequence?A) Its distance from other starsB) Its color and appearance in the night skyC) Its initial mass at the time of formationD) Its age at the time of formation

What is the final stage of a low-mass star's life cycle, where it no longer emits light or heat and slowly cools down over billions of years?A) Black holeB) White dwarfC) Neutron starD) Brown dwarf

The first servicing mission to the Hubble Space Telescope took place in which year and was carried out by space shuttle:A) 1993, STS-61B) 1997, STS-82C) 2002, STS-109D) 2009, STS-125

What type of star is formed from the remnants of a massive supernova explosion, and its core has collapsed into an extremely dense object?A) Brown dwarfB) Neutron starC) White dwarfD) Main sequence star

The Hubble Space Telescope is positioned in low Earth orbit at an altitude of approximately:A) 100 kilometers (62 miles)B) 300 kilometers (186 miles)C) 500 kilometers (310 miles)D) 800 kilometers (497 miles)

What significant role did the Hubble Space Telescope play in determining the age of the universe?A) It discovered the cosmic microwave background radiation.B) It directly measured the expansion rate of the universe.C) It observed distant galaxies, allowing astronomers to calculate the universe's age.D) It detected gravitational waves from the Big Bang.

What characteristic of a star is determined by its luminosity (brightness) and is denoted by Roman numerals in the spectral classification system?A) TemperatureB) MassC) Luminosity classD) Age