Staar Review Science

What is the elevation of point B?

• 800 ft

• 850 ft

• 900 ft

• 1000 ft

Explain the flow of energy in this food chain (who passes energy to who).

• The hawk gives energy to the snake. The snake gives energy to the mouse. The mouse gives energy to the grasshopper who gives energy to the grass.

• The mouse gives energy to the hawk. The snake gives energy to the grasshopper. The grass gives energy to the snake.

• The grass gives energy to the grasshopper. The grasshopper gives energy to the mouse. The mouse gives energy to the snake who gives energy to the hawk.

Tags

NGSS.MS-LS2-3

Is the following equation balanced?
2C₂H₂ + 5O₂ --> 4CO₂ + 2H₂O

• yes

• no

Tags

NGSS.MS-PS1-5

Our sun is currently in what star stage?

• Protostar

• Nebula

• Main Sequence

• Red Giant

Most stars are made of which elements?

• Hydrogen only

• Hydrogen and Lithium

• Hydrogen and Sodium

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-3

Which of the following list the correct order of the life cycle of massive stars?

• Nebula --> protostar --> main sequence --> red supergiant --> supernova --> blackhole

• Nebula --> protostar --> main sequence --> red giant --> planetary nebula --> white dwarf --> black dwarf

• Nebula --> protostar --> main sequence --> supernova --> red giant --> blackhole

• Nebula --> protostar --> blackhole --> red supergiant --> supernova --> main sequence

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

What is the mass number of the atom shown in the Bohr model?

• 11

• 12

• 23

• Can't be determined

Tags

NGSS.MS-PS1-1

what group number are the noble gases

• 17

• 18

• 14

• 15

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2

• 16

• 8

• 5

Tags

NGSS.MS-PS1-1

How many molecules of Carbon are in the following formula? 3C₂H₆

• 3

• 6

• 12

• 18

Tags

NGSS.MS-PS1-1