Layers and Currents - Measuring Salinity

Grade and/or Subject:
Grade 5 Science, Grade 5 Math, Earth Science, Elective—Oceanography
Description:
  Explain why light refracts when it passes through water. Use a real or simulated refractometer to measure the salinity of water from various locations. Relate your findings to various aquatic habitats in Virginia and learn more about the various organisms that live in these habitats.
Virginia Standards of Learning:
  Grade 5 Science (5.1, 5.3, 5.6)
Grade 5 Math (5.18)
Earth Science (ES.1, ES.11)
Elective—Oceanography
NCTM Standards:
  Represent data using tables and graphs; interpret data.
NSE Standards:
  Science as inquiry; properties and changes of properties in matter; interactions of light with matter; structure of Earth system; ecosystems; use of mathematics in science.
Materials:
 

Computer with Internet Access
Hands-On Materials

  • Eyedropper or wash bottles
  • Kimwipes or lens tissues
  • Salinity refractometer
  • Table salt
  • Water - distilled or de-ionized