Astronomy test review 1

It takes ______ days for the Earth to travel or _______ around the Sun.

• 365 1/4, revolve

• 24, rotate

• 36, move

Tags

NGSS.MS-ESS1-1

___________ is caused by the rotation of the Earth.

• seasons

• day and night

The _____________________ are caused by the tilt of the Earth and its revolution around the sun.

• days

• nights

• rotations

• seasons

Tags

NGSS.MS-ESS1-1

Stars are born in nebulae. Which best describes a nebula?

• a collection of gas and dust

• a belt of asteroids

• a collection of older stars

• an empty space

The life cycle of a star is determined by:

• mass

• temperature

• color

• shape

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

What element is found in all main sequence stars, which make up 90% of those in the universe?

• Hydrogen

• Lithium

• Iron

• Carbon

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

Which 2 elements are the most abundant in the universe?

• Hydrogen & Oxygen

• Carbon & Oxygen

• Carbon & Iron

• Hydrogen & Helium

What two measurements are used to classify stars in an HR diagram?

• location & distance

• size & location

• brightness & distance

• temperature & brightness

To find brighter stars, what direction do you go on an HR diagram?

• up

• down

• left

• right

To find hotter stars, what direction do you go on an HR diagram?

• up

• down

• left

• right