Topic 3 Astronomy Earth Science Regents Questions

Which star color indicates the hottest star surface temperature?

• blue

• white

• yellow

• red

Compared to the sun a white dwarf star is

• hotter and smaller

• hotter and larger

• cooler and larger

• cooler and smaller

The universe is approximately 13.8 billion years old. Compared to the age of the solar system, the age of the universe is approximately

• the same age as the solar system

• 2x older than the solar system

• 3x older than our solar system

• 4x older than our solar system

Planets that are closest to the Sun are identified as

• low-density jovian planets

• low-density terrestrial planets

• high-density jovian planets

• high-density terrestrial planets

Spinning on an axis

• Rotation
• Nutation
• Solstice

A major belt of asteroids is located between Mars and Jupiter. What is the approximate average distance between the Sun and this major asteroid belt?

• 110 million kilometers

• 220 million kilometers

• 390 million kilometers

• 850 million kilometers

Which evidence best supports the theory that the universe began with a massive explosion?

• cosmic background radiation in space

• parallelism of Earth's axis

• radioactive dating of Earth's bedrock

• life cycle of stars

Which star has a surface temperature most similar to the surface temperature of Alpha Centauri?

• Polaris

• Procyon B

• Betelgeuse

• Sirius

Which planet's day (period of rotation) is longer than its year (period of revolution)?

• Mercury

• Venus

• Jupiter

• Saturn

Which sequence correctly lists the relative sizes from smallest to largest?

• our solar system, universe, Milky Way Galaxy

• our solar system, Milky Way Galaxy, universe

• Milky Way Galaxy, our solar system, universe

• Milky Way Galaxy, universe, our solar system