Astronomy Midterm Review

What is the term for regions of the night sky officially recognized by astronomers?

• Asterisms

• Constellations

• Star Clusters

• Nebulae

Which object in the night sky appears brightest after the Moon?

• Sirius

• Venus

• Jupiter

• Mars

How does light pollution affect stargazing?

• It makes stars appear brighter

• It blocks the view of dim celestial objects

• It enhances the visibility of planets

• It only impacts cities

What is the primary purpose of an asterism?

• To divide the celestial sphere

• To create a detailed star catalog

• To help locate other stars

• To map out galaxies

How do astronomers estimate the angle of celestial objects without instruments?

• By using the Big Dipper

• By spreading their fingers at arm's length

Which form of radiation is used in satellite communications?

• Infrared

• Microwaves

• X-rays

• Gamma rays

What property of gamma rays makes them dangerous to living tissue?

• High speed

• Short wavelength

• Long wavelength

• Low energy

What happens to light when its frequency increases?

• Its wavelength gets longer

• Its wavelength gets shorter

• It becomes less energetic

• It stops oscillating

Which color of visible light has the most energy?

• Red

• Green

• Blue

• Violet

Why are space telescopes needed to observe X-rays?

• They capture clearer images

• X-rays are blocked by Earth’s atmosphere

• They are farther from light pollution

• X-rays only exist in deep space