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ScienceGrade 2

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 2

2026-07-20

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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