Stars and Galaxies

Stars are mostly made of:

• hydrogen

• helium

• oxygen

• nitrogen

Stars shine because of:

• kinetic energy

• nuclear energy

• gravitational energy

• mechanical energy

Tags

NGSS.HS-ESS1-1

Which of these are the hottest stars?

• red

• orange

• yellow

• blue

What temperature is our sun compared to other stars?

• very hot

• hot

• medium

• cool

How long will our sun continue to shine?

• 1 billion years

• 3 billion years

• 5 billion years

• 7 billion years

Tags

NGSS.HS-ESS1-1

How long is one light year?

• 9.06 trillion km's

• 9.62 trillion km's

• 9.64 trillion km's

• 9.46 trillion km's

Tags

NGSS.MS-ESS1-3

How does a galaxy stay together?

• movement

• gravity

• heat

• pressure

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What type of stars do we mostly find in an irregular galaxy?

• old stars

• young stars

• small stars

• large stars

What shape is an elliptical galaxy?

• round

• disc

• spiral

• american football

Our solar system is in a galaxy called:

Tags

NGSS.MS-ESS1-2