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Eighth Grade (Grade 8) Science Questions

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Grade 8 Properties of Matter
Plastic is an example of a(n)                      .
  1. crystalline solid
  2. amorphous solid
  3. fluid
  4. high viscosity liquid
Grade 8 Atomic Structure
Positively-charged particles within the atom are called                .
  1. neutrons
  2. nucleus
  3. electrons
  4. protons
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 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 Light and Optics
When the surface of a mirror curves inward, like the inside of a bowl, it is called a                .
  1. plane mirror
  2. concave mirror
  3. convex mirror
  4. diffuse mirror
Grade 8 Light and Optics
What type of radiation is visible to the human eye?
  1. Ultraviolet light
  2. Infrared light
  3. Gamma rays
  4. Visible light
Grade 8 Circulatory and Immune Systems
Which letter represents the right ventricle?
Heart Diagram
  1. A
  2. B
  3. C
  4. D
  5. E
Grade 8 Scientific Method
A factor that can change in an experiment is a
  1. conclusion.
  2. variable.
  3. hypothesis.
  4. theory.
Grade 8 Cell Structure and Function
What is true about the cell wall? (Select all that apply.)
  1. present in all cells
  2. is a gel-like structure
  3. present only in plant cells
  4. contains the things that cells need to carry out its life processes
  5. separates the cell from its environment
  6. controls what substances go in or out of the cell
  7. gives support and structure to a cell
Grade 8 Circulatory and Immune Systems
What is the largest artery?
  1. aorta
  2. pulmonary artery
  3. superior vena cava
Grade 8 Kinetics and Equilibrium
When adding heat energy to particles in a container, the particles will NOT                                      .
  1. move faster
  2. increase the space between each other
  3. increase their volume
  4. increase their attractive forces
Grade 8 Minerals
Quartz, feldspar, and Mica are silicate minerals. Silicate minerals contain atoms of silicon and oxygen and often other elements bonded together. Which of the following is TRUE about silicate minerals?
  1. They are pure elements.
  2. They are made up of compounds.
  3. They melt at very low temperatures.
  4. They are made up of only one kind of atom.
Grade 8 Forces and Motion
This is friction where two surfaces slide past one another.
  1. Rolling
  2. Sliding
  3. Fluid
  4. Static
Grade 8 Succession
In                     , soil begins to form when lichens and weather break down volcanic rock into smaller pieces.
  1. pioneer species
  2. primary succession
  3. secondary succession
  4. climax communities
Grade 8 Biomes
Which TWO biomes have the most precipitation?
  1. temperate deciduous forest and tropical rain forest
  2. desert and tundra
  3. temperate rain forest and tropical rain forest
  4. taiga and temperate deciduous forest
Grade 8 Properties of Matter
The ability of matter to be pulled into a wire is                .
  1. malleability
  2. solubility
  3. meniscus
  4. ductility
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