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Eighth Grade (Grade 8) Science Questions

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Grade 8 Forces and Motion
This is friction where an object moves through liquid or gas.
  1. Static
  2. Fluid
  3. Sliding
  4. Rolling
Grade 8 Food Chains and Webs
Which one is a heterotroph?
  1. plant
  2. flower
  3. producer
  4. consumer
Grade 8 Forces and Motion
The force of gravity acting on an object is called what?
  1. weight
  2. force
  3. gravity
  4. mechanical system
Grade 8 Properties of Matter
What is the density of a substance that has a mass of 20 g and volume of 10 mL?
  1. 0.5 g/mL
  2. 2.0 g/mL
  3. 10 g/mL
  4. 200 g/mL
Grade 8 DNA, RNA, and Genetics
What describes a segment of DNA that determines a specific trait in a person, such as attached earlobes?
  1. a gene
  2. a phenotype
  3. a chromosome
  4. a characteristic
Grade 8 Circulatory and Immune Systems
The heart, veins, arteries, capillaries, and blood are parts of the                 system.
  1. lymphatic
  2. cardiovascular
  3. respiratory
  4. circulatory
Grade 8 Tectonics
What is the hypothesis that continents have slowly moved to their current locations?
  1. magnetic reversal
  2. continental drift
  3. continental slope
  4. convection
Grade 8 Food Chains and Webs
What is the ultimate energy source for living organisms?
  1. energy stored in chemical bonds
  2. the Sun
  3. energy stored in cells
  4. nuclear power
Grade 8 Atomic Structure
Positively-charged particles within the atom are called                .
  1. neutrons
  2. nucleus
  3. electrons
  4. protons
Grade 8 Periodic Table and Elements
This is a metallic element that reacts violently with water.
  1. copper
  2. iron
  3. silver
  4. sodium
Grade 8 Properties of Matter
The change from a gas to a liquid is called                .
  1. evaporation
  2. condensation
  3. melting
  4. sublimation
Grade 8 Physics
All are non-renewable resources except                .
  1. uranium
  2. coal
  3. wind energy
  4. fossil fuel
Grade 8 Skin, Skeleton, and Muscles
The skin, or                   , is composed of several types of tissues.
  1. serous membrane
  2. mucous membrane
  3. cutaneous membrane
  4. synovial membrane
Grade 8 Earth Science
What event marks the beginning of the autumn season in the Northern Hemisphere?
  1. Winter Solstice
  2. Vernal Equinox
  3. Autumnal Equinox
  4. Summer Solstice
Grade 8 Waves and Sound
Gamma Rays are related to X-rays.
  1. True
  2. False
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