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ScienceGrade 2nd· How Do Things Float or Sink

How Do Things Float or Sink

How Do Things Float or Sink

Learning Objective

Students will learn about how things float or sink.

Words to Know

Density: How much stuff is packed into space!; Bowling balls are denser than beach balls.
Buoyancy: Upward force water pushes on objects!; Buoyancy makes ships float.
Mass: How heavy something is!; Golf balls have more mass than ping-pong balls.
Volume: How much space something takes up!; Same volume, different mass = different density.

Check What You Learned

Quick Quiz

1 / 3

What does “Density” mean?

Lesson Info

Grade 2nd

2026-07-20

How Do Things Float or Sink

Standards Alignment

5-PS1-3
Make observations and measurements to identify materials based on their properties
5-PS1-4
Conduct an investigation to determine whether the mixing of two or more substances results in new substances

Keywords

2nd grade sciencescience for kidsthingsfloatsinkdensitybuoyancymassvolume5-PS1-35-PS1-4kids learning

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