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Ninth Grade (Grade 9) Science Questions

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Grade 9 :: Scientific Method by sackjd
An investigator is interested in seeing how tall a certain species of plant will grow if it is kept under red light for a month. What would be valid hypothesis for this experiment?
  1. If the light is red, then the plant will grow.
  2. If the investigator uses pea plants, then there will be a lot of growth.
  3. If plants are grown under different colored lights then they will grow different heights.
  4. If a month passes, then the plant will grow under the red light.
Grade 9 :: DNA, RNA, and Genetics by meganber
Which of the following word describes the synthesis of RNA using a DNA
template?
  1. transcription
  2. translation
  3. photosynthesis
  4. respiration
Grade 9 :: Biochemistry by LBeth
[math]C_6H_12O_6 + 6O_2->6CO_2+6H_2O+en ergy [/math] is the balanced chemical equation for
  1. photosynthesis
  2. glycolysis
  3. cellular respiration
  4. Krebs cycle
Grade 9 :: Geomorphology by CaryBloomquist
A glacier will retreat if
  1. more ice accumulates than melts.
  2. it gains ice at the same rate that ice melts.
  3. more ice melts than accumulates.
  4. the ice melts slower than it accumulates.
Grade 9 :: Magnetism and Electricity by jlovering
Complete the following statement:

If you increase the resistance in a series circuit,                               .
  1. the current will also increase
  2. the current will decrease
  3. the voltage will increase
  4. the voltage will decrease
Grade 9 :: Tectonics by CaryBloomquist
What is a fault?
  1. the point inside Earth at which an earthquake occurs
  2. the point on Earth's surface directly above the earthquake focus
  3. a fracture in Earth along which movement has occurred
  4. a fracture in Earth along which NO movement has occurred
Grade 9 :: Forces and Motion by jlovering
Ball A is a 1.50 kg ball moving at 8.00 m/s south. It strikes Ball B, a 2.00 kg ball moving at 3.00 m/s south. The velocity of Ball B after the collision is 4.50 m/s south.

What is the momentum of Ball A before the collision and after the collision?
  1. 12 before the collision, 12 after the collision
  2. 18 before the collision, 12 after the collision
  3. 12 before the collision, 9 after the collision
  4. 20 before the collision, 0 after the collision
Grade 9 :: Scientific Method by mpjose
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