Two ________ atoms join together in a nuclear reaction

• Hydrogen

• Helium

• Uranium

• Oxygen

Tags

NGSS.HS-PS1-8

A star is luminous because

• It gives off light

• It gives off heat

• It is bright

• It gives off light and heat

The life cycle of a star has how many phases?

• 6

• 3

• 4

• 5

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

The first stage of a stars life cycle is called

• Formation

• The stable period

• The red giant

• The white dwarf

Gas clouds in space are called

• Supernova

• Helium

• Nebulae

• Gravity

The longest phase in a stars life cycle is called

• Formation

• The stable phase

• The red giant

• The white dwarf

The star is called a red giant in the third phase because

• It is red and giant

• It is blue and small

• It has expanded due to burning of helium

• It has expanded due to burning of hydrogen

Tags

NGSS.HS-ESS1-3

In the final stage a star becomes known as a

• Red giant

• White dwarf

• Red dwarf

• White giant

The galaxy we are in is called

• Earth

• Snickers

• Solar system

• Milky way

The fourth closest planet to the sun is called

• Jupiter

• Earth

• Mars

• Mercury