About This Lesson
Learning Objective:
Expanding on the normal sink and float experiment, students will learn about how salt changes the density of water.
Next Generation Science Standards
- K-PS3-1 Make observations to determine the effect of sunlight on Earth’s surface. Examples of Earth’s surface could include sand, soil, rocks, and water. Assessment of temperature is limited to relative measures such as warmer/cooler.
- SEP.3 Planning and Carrying Out Investigations
- SEP.3.E Test two different models of the same proposed object, tool, or process to determine which better meets criteria for success.
- SEP.3.D Make predictions about what would happen if a variable changes.
- SEP.1.B Ask and/or identify questions that can be answered by an investigation.
- SEP.3.F Make predictions based on prior experiences.
What you need
- Two tall glasses (big enough to fit an egg)
- 2 eggs (either raw or boiled)
- Warm water
- Salt
