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Ninth Grade (Grade 9) Science Questions

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Grade 9 Oceanography and Hydrology
Grade 9 Atmosphere
A knot is used to measure                        .
  1. temperature
  2. wind speed
  3. barometric pressure
  4. amount of precipitation
Grade 9 Atmosphere
Which of these variables is considered to have the biggest impact on climate?
  1. Elevation
  2. Wind and air masses
  3. Proximity to water
  4. Latitude
Grade 9 Communities, Populations, and Ecosystems
Due to biomagnification, what type of animal is the most effected by pollutants?
  1. Animals at the bottom of the food pyramid.
  2. Animals in the middle of the food pyramid.
  3. Animals at the top of the food pyramid.
  4. All animals in a food pyramid are effected equally.
Grade 9 DNA, RNA, and Genetics
Suppose each body cell of animal A has 50 chromosomes, each sperm of animal B has 26 chromosomes, and each egg of animal C has 25 chromosomes. Which statement is true?
  1. Animals A and C could be the same animal.
  2. Animal A has the most chromosomes overall.
  3. Animal C has the most chromosomes in its body cells.
  4. Animals B and C are probably the same kind of animal.
Grade 9 Botany
What is the term most closely related to "transpiration"?
  1. capillary action
  2. evaporation
  3. osmosis
  4. transportation
Grade 9 DNA, RNA, and Genetics
Which mutation is exclusive to a chromosome?
  1. point
  2. silent
  3. deletion
  4. frameshift
Grade 9 Adaptations and Behavior
What are changes to an organism's environment called?
  1. responses
  2. reactions
  3. stimuli
  4. energy
Grade 9 Periodic Table and Elements
Grade 9 Stars
Which of the following stars would be most likely to spend the longest time on the main sequence?
  1. a star with 0.05 solar masses
  2. a star with 1.2 solar masses
  3. a star with 7 solar masses
  4. a star with 15 solar masses
Grade 9 Respiration, Digestion, and Excretion
Grade 9 Organic Chemistry
Which of the following is NOT TRUE about Carbon atoms?
  1. A carbon atom has four valence electrons and can form four covalent bonds.
  2. Carbon atoms are not found in organic molecules
  3. Carbon atoms can form bonds with other carbon atoms to make many different structures.
  4. Carbon atoms can form double and triple bonds.
Grade 9 Solvents, Solutes, and Solubility
Which is the best example of a solution?
  1. blood
  2. milk
  3. salt dissolved in water
  4. oil and vinegar mixed for salad dressing
Grade 9 Geomorphology
Which describes a glacier?
  1. a thick sheet of ice
  2. located over land
  3. moving under its own weight
  4. all of the above
Grade 9 Skin, Skeleton, and Muscles
Grade 9 Historical Geology
What determines the age of a fossil by radioactive elements?
  1. Half-life
  2. Radiometric Dating
  3. Relative Dating
  4. Fossil Formation
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