What is scientific notation used for?

• To express very large or very small numbers using powers of ten.

• To measure distances in kilometers.

• To calculate the speed of sound.

• To determine the age of stars.

What is parallax used to measure?

• The brightness of stars.

• The distance to nearby stars.

• The temperature of planets.

• The size of galaxies.

What is an Astronomical Unit (AU)?

• The distance light travels in one year.

• The average distance between Earth and the Sun.

• The diameter of the Earth.

• The distance from Earth to the Moon.

Tags

NGSS.MS-ESS1-3

How far does light travel in one year?

• 1 trillion kilometers.

• 9.46 trillion kilometers.

• 100 million kilometers.

• 5 trillion kilometers.

What is the celestial sphere?

• A real sphere surrounding the Earth.

• An imaginary sphere on which celestial objects appear to lie.

• A sphere made of stars.

• A sphere that measures the Earth's rotation.

What is the celestial coordinate that measures the angular distance of an object north or south of the celestial equator?

• Right Ascension

• Declination

• Azimuth

• Altitude

Which celestial coordinate is similar to longitude on Earth?

• Declination

• Azimuth

• Right Ascension

• Altitude

What is the direction of a celestial object measured in degrees clockwise from the north called?

• Altitude

• Zenith

• Azimuth

• Declination

What is the angle between an object in the sky and the observer's local horizon known as?

• Declination

• Altitude

• Right Ascension

• Azimuth

Which star is also known as the North Star?

• Sirius

• Betelgeuse

• Polaris

• Vega