Science STAAR Category

Use this model of the Hertzsprung-Russell diagram to answer question.
An astronomer discovers a new star that is very hot, but not very bright. What type of star did she discover?

• a red giant
  

• a young star on the main sequence 

• an old star on the main sequence 

• a white dwarf 

Tags

NGSS.MS-ESS1-3

Our Sun is a middle-aged star with an average temperature and brightness. What type of star is our Sun according to the Hertzburg-Russell diagram?

• a white dwarf
  

• a red giant
  

• a star on the upper left portion on the main sequence 

• a star in the middle of the main sequence 

As a normal, averaged-size star progresses through its life cycle, what change will it undergo?

• it becomes cooler
  

• it gets smaller
  

• it becomes brighter 

• its gravity increases 

Tags

NGSS.HS-ESS1-1

Looking at the answer choices in Question#8, which answer choice could best be classified as an asymmetrical galaxy? 

• Galaxy A

• Galaxy B

• Galaxy C

• Galaxy D

What is the term for the amount of matter in an object?

• Weight

• Density

• Mass

• Volume

What is the process by which plants release water vapor into the air through their leaves?

• Condensation

• Transpiration

• Evaporation

• Precipitation

Tags

NGSS.MS-ESS2-4

What is the primary function of the chloroplasts in plant cells?

• To break down sugar molecules to release energy

• To store water and nutrients

• To capture light energy and convert it into chemical energy

• To control the entry and exit of substances in and out of the cell

Tags

NGSS.MS-LS1-6

What does solubility refer to?

• The ability of a substance to dissolve in another substance.

• The temperature at which a liquid turns into a solid.

• The ability of a substance to react with oxygen.

• The temperature at which a solid turns into a liquid.

Which of the following is a chemical change?

• Dissolving salt in water

• Boiling water

• Burning wood

• Melting ice

Tags

NGSS.MS-PS1-2

What is the term for a star's brightness as seen from Earth?

• Absolute magnitude

• Apparent magnitude

• Luminosity

• Intensity