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Ninth Grade (Grade 9) Science Questions

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Grade 9 :: Scientific Method by kurtman
Choose the answer that best displays the use of an independent and dependent variable.
  1. Frank sets the temperature of a room to 31 degrees Celsius. He will come back later to record the height of the petunias.
  2. Mike creates three different solutions. He pours each one on 3 different plants and will observe which one grows faster.
  3. Emily observes a change in color of a metal, she records the color in her data section.
  4. Daniel changes his data after realizing it does not align with his hypothesis. He adds extra information to his conclusion which he made up.
Grade 9 :: Scientific Method by jlovering
Victoria grows the same bacteria in 20 petri dishes. She places 10 of the dishes in a container with a normal atmosphere. The remaining dishes she places in a container in which the oxygen level is double the normal level. She labels the first group "A" and the second group "B". Which of the following best describes the groups?
  1. Group A is the control group; Group B is the experimental group
  2. Group A is the experimental group; Group B is the control group
  3. Group A is the hypothesis; Group B is the theory
  4. Group A is the variable; Group B is the observation
Grade 9 :: Properties of Matter by lisamarie137
Define mass.
  1. the amount of space occupied by an object
  2. the measurement of the quantity of matter in an object
  3. the mass per unit volume of a material
  4. the mass per unit density of a material
Grade 9 :: Cell Structure and Function by PMISIAS
A student views cells from several different prokaryotic and eukaryotic organisms under a high-powered microscope. Which of the following statements describes how the prokaryotic cells appear different from the eukaryotic cells?
  1. The prokaryotic cells do not have a nucleus
  2. The prokaryotic cell are much larger
  3. The prokaryotic cells have mitochondria
  4. The prokaryotic cells have a less distinct shape
Grade 9 :: Biochemistry by PMISIAS
Cellular respiration is
  1. The process of breaking down chemical energy stored in bonds into energy that can be used by the cell
  2. The process of creating food for the cell
  3. The process of combining oxygen and water to produce another substance to be transported
  4. The process of making proteins
Grade 9 :: Biochemistry by PMISIAS
Which of the following accurately describes the products of cellular respiration?
  1. carbon dioxide and water
  2. oxygen and carbon dioxide
  3. water and glucose
  4. glucose and oxygen
Grade 9 :: Biochemistry by PMISIAS
Which of the following most accurately describes the purpose of cellular respiration?
  1. to breakdown glucose into energy that can be used for cellular functions
  2. to breakdown usable energy into smaller parts
  3. to breakdown different types of substances to be used to build other parts of the cell
  4. all of the above
Grade 9 :: Properties of Matter by lisamarie137
Define volume.
  1. the amount of space occupied by an object
  2. the measurement of the quantity of matter in an object
  3. the mass per unit volume of a material
  4. the mass per unit density of a material
Grade 9 :: Forces and Motion by wlemerson
Grade 9 :: Forces and Motion by on2pleroma
What is the invisible force of attraction between masses?
  1. remote-sensing
  2. free-fall
  3. gravity
  4. ultraviolet radiation
  5. ozone concentration layer
  6. none of the above
Grade 9 :: Forces and Motion by wlemerson
The amount of air resistance depends on the speed of a falling object and                                     
  1. the mass of the object
  2. gravitational pull of the Earth
  3. the time of day the object is falling
  4. amount of surface area of the object
Grade 9 :: Forces and Motion by wlemerson
An astronaut drops a hammer and an egg while standing on the surface of the moon. Which one will hit the surface first?
  1. the egg
  2. the hammer
  3. both will land at the same time
  4. neither, both will float off into space
Grade 9 :: Biochemistry by PMISIAS
Which of the following accurately describes the products of photosynthesis?
  1. oxygen and carbon dioxide
  2. glucose and oxygen
  3. carbon dioxide and water
  4. water and glucose
Grade 9 :: Energy and Momentum by lisamarie137
Stored energy is called
  1. thermal energy
  2. kinetic energy
  3. mechanical energy
  4. potential energy
Grade 9 :: Energy and Momentum by erinferrari
Which of the following is not used to calculate potential energy?
  1. mass
  2. height
  3. gravitational acceleration
  4. speed
Grade 9 :: Properties of Matter by lisamarie137
What is the formula used to find the mass of an object?
  1. [math]M=DV[/math]
  2. [math]M=D/V[/math]
  3. [math]M=M/V[/math]
  4. [math]M=VM[/math]
Grade 9 :: Cell Structure and Function by PMISIAS
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