Ch. 22 Lesson 1 Quick Vocabulary

What does "apparent" mean?

• an object that appears to be bright, but is actually very dim

• something your mind visualizes, but is not really there.

• what appears to the eye or mind

• an object that appears extra bright

What does the term 'apparent magnitude' refer to?

• The true brightness of an object

• The distance that light travels in one year

• The average distance between Earth and the Sun

• The measure of how bright an object appears from Earth

What is a light-year?

• The time it takes for light to travel in one year

• The distance that light travels in one year

• The average distance between any two stars

• The brightness of a star as seen from Earth

What does 'luminosity' refer to in astronomy?

• The apparent change in an object's position

• The distance between Earth and the Sun

• The true brightness of an object

• The measure of how bright an object appears from Earth

What is parallax?

• The instrument that spreads light into different wavelengths

• The measure of how bright an object appears from Earth

• The apparent change in an object's position caused by looking at it from two different points

• The average distance between Earth and the Sun

What is a spectroscope used for?

• Measuring the distance that light travels in one year

• Observing the true brightness of an object

• Spreading light into different wavelengths

• Calculating the average distance between Earth and the Sun

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

What is the meaning of an astronomical unit?

• a very large distance between two or more objects in space

• the unit of measurement for a star's orbit

• the distance from the Earth to the Sun

• the distance from the Earth to the end of the Solar System

Tags

NGSS.MS-ESS1-3

What is the numerical value of the astronomical unit?

• 10 trillion km

• 300,000 km/s

• 186,000 miles

• 150 million km

Tags

NGSS.MS-ESS1-3