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Eighth Grade (Grade 8) Science Questions

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Grade 8 Biochemical Pathways
What is the process where cells obtain energy from sugar molecules?
  1. biotic
  2. nitrogen cycle
  3. respiration
  4. food chains
Grade 8 Cell Structure and Function
Grade 8 Circulatory and Immune Systems
Grade 8 Simple Machines
Grade 8 Simple Machines
An object being lifted or moved by a machine is a:
  1. fulcrum
  2. load
  3. work
  4. force
  5. friction
Grade 8 Communities, Populations, and Ecosystems
Grade 8 Forces and Motion
Grade 8 Circulatory and Immune Systems
What do red blood cells not do?
  1. Carry oxygen.
  2. Carry food and nutrients.
  3. Take carbon dioxide or waste away.
  4. Fight germs.
Grade 8 Science
What statement can clearly explain the basic reason for the Earth's seasons:
  1. As the sun moves away from Earth the seasons will change
  2. As the Earth revolves around the sun, the seasons change
  3. As the Earth revolves around the sun, the Earth's tilt will result in either the northern or southern hemisphere getting more exposure from the direct rays of the sun
  4. none of these are true
Grade 8 Waves and Sound
Which best describes electromagnetic energy?
  1. moves electrons
  2. travels through space as waves
  3. forms chemical bonds
  4. generates electrical energy
Grade 8 Planetary Motion

This question is a part of a group with common instructions. View group »

Which statement best describes tides experienced on Earth when the Sun, Moon, and Earth are positioned as shown in the diagram?
Spring Tide
  1. maximum high tides, minimum low tides
  2. maximum high tides, maximum low tides
  3. minimum high tides, maximum low tides
  4. minimum high tides, minimum low tides
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