What property of chemical elements allows us to understand what the universe is made of?

• Their temperature

• Their density

• The the unique set of colours they reflect from the stars.

• Their mass

• Their unique set of colours when heated.

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

Which element burns with a red color?

• Potassium

• Sodium

• Strontium

• Copper

What do the black lines in the sun's spectrum represent?

• Emission lines

• Absorption lines

• Transmission lines

• Reflection lines

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

What can we determine by looking at the black lines in the sun's light?

• The constituent elements of the sun

• The distance of the sun from Earth

• The temperature of the sun

• The age of the sun

Tags

NGSS.HS-ESS1-2

What percentage of the sun is made up of hydrogen?

• 2%

• 28%

• 70%

• 50%

Which star has about the same heavy element abundance as our sun but less carbon and more nitrogen?

• Vega

• Polaris

• Sirius

• Proxima Centauri

Tags

NGSS.HS-ESS1-3

Which star contains three times as much iron as the sun?

• Sirius

• Vega

• Polaris

• Proxima Centauri

Tags

NGSS.HS-ESS1-3

Which star is rich in magnesium?

• Proxima Centauri

• Sirius

• Vega

• Polaris

Tags

NGSS.HS-ESS1-3

What is the second brightest star in the Northern sky?

• Vega

• Proxima Centauri

• Sirius

• Polaris

How many elements are found both on Earth and across space?

• 100

• 92

• 70

• 28