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Eighth Grade (Grade 8) Science Questions

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Grade 8 Biology
A plant's leaves growing towards light is an example of which characteristic of living things?
  1. growth
  2. development
  3. response to stimuli
  4. adaptation
Grade 8 Scientific Methods and Applications
When translated,                 means "false science."
  1. pseudopodia
  2. pseudoscience
  3. astrology
  4. astronomy
Grade 8 Planetary Motion
Earth                 on its axis once every 24 hours.
  1. revolves
  2. rotates
  3. flips
  4. reverses
Grade 8 Small Bodies and Dwarf Planets
This is a "dirty snowball" made of dust and ice.
  1. comet
  2. meteor
  3. asteroid
  4. meteorite
Grade 8 Environmental Science
Energy sources such as wind, hydroelectric, and geothermal are similar in that
  1. they are renewable.
  2. they are clean energy -- no gas emissions.
  3. reduce our dependence on fossil fuels.
  4. all of the above
Grade 8 Lab Practices and Tools
Before beginning certain investigations (labs), why should you first put on protective goggles and clothing?
  1. We have to use them since the school bought the materials.
  2. We wear them to help us see better and keep us warm.
  3. We are required to protect our eyes, hands, skin, and clothing due to heat or harmful chemicals.
  4. None of the above.
Grade 8 Tectonics
The dozen or so plates that make up the surface of Earth.
  1. Tectonic
  2. Silicates
  3. Shale
Grade 8 Scientific Method
Predictions about what will happen can be based on
  1. controls.
  2. technology.
  3. prior knowledge.
  4. number of trials.
Grade 8 DNA, RNA, and Genetics
What is a genotype?
  1. an organism's genetic makeup or allele combinations
  2. an organism's physical appearance or visible traits
Grade 8 Atmosphere
The symbol by F indicates a(n)                 front.
Weather Map
  1. cold
  2. warm
  3. occluded
  4. stationary
Grade 8 Nervous and Endocrine Systems
What are the two parts of the nervous system?
  1. peripheral nervous system and cerebrum
  2. central nervous system and lateral nervous system
  3. brain stem and cerebellum
  4. central nervous system and peripheral nervous system
Grade 8 Waves and Sound
What does the term "10x" represent in microscopy?
  1. The number of lenses in a microscope
  2. The size of the microscope
  3. The number of microorganisms visible
  4. The level of magnification
Grade 8 Rocks
What geologic process can change granite (igneous rock) into gneiss (metamorphic rock)?
  1. Compacting and cementing
  2. Cooling
  3. Heat and pressure
  4. Melting
Grade 8 Communities, Populations, and Ecosystems
How are limiting factors and carrying capacity similar?
  1. They both limit the number of animals.
  2. They both allow more animals.
  3. They both kill animals.
  4. They both create more deaths than births.
Grade 8 Food Chains and Webs
What statement about energy pyramids is true? (Select all that apply.)
  1. The greatest amount of energy is available at the producer level.
  2. At each higher level of the pyramid, there is more energy available.
  3. About half the energy at one level is transferred to the next.
  4. Most food webs have only three or four feeding levels.
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