EEduVistaHQ

Sink or Float?

Guess whether everyday objects will sink or float, then test them in water and look for a pattern.

Grade 1ExperimentSciencePhysicsMeasurementBeginner20 to 30 min4 materialsAdult supervision required

What you'll learn

  • Make a guess before testing and check it against what really happens
  • Sort objects into two groups: sink and float
  • Notice that size and weight do not always tell you what will happen

Objective

Predict whether objects sink or float, test each one, and sort them by what happened.

STEM concepts

PredictionFloating and sinkingObservationSorting
Ready to do this one?Sign in or create a free parent account to unlock projects. Each family opens a couple of projects per grade every month, so there is always something new to come back to.
Sign up free
Materials and safety
Step-by-step instructions
Prediction, test sheet and results
Why does it work, challenge and project report

Try another STEM challenge

Grade 1
ExperimentBeginner

Shadow Detectives

Science · Physics, Measurement

Use a flashlight to find out how a shadow changes when an object moves closer or farther away.

20 to 30 min · 5 materialsView project
Grade 1
ExperimentBeginner

Rainbow Walking Water

Science · Chemistry, Physics

Watch colored water climb up paper towels from cup to cup and mix to make brand new colors.

20 to 30 min · 6 materialsView project
Grade 1
BuildBeginner

Weather Watchers: Build a Rain Gauge

Science, Math · Earth Science, Measurement

Make a simple rain gauge from a bottle and record how much rain falls each day for a week.

30 to 45 min · 7 materialsView project
Grade 1
Math ChallengeBeginner

How Long Is My Foot? Measuring with Anything

Math · Measurement, Number Sense

Measure the same things with paper clips, blocks and a ruler and discover why we need standard units.

25 to 40 min · 5 materialsView project
Grade 2
ExperimentBeginner

Ramp Pull: Do Ramps Make Lifting Easier?

Science, Engineering · Machines, Physics

Use a rubber band to compare how hard it is to lift a toy straight up and to pull it up ramps.

30 to 45 min · 6 materialsView project
Grade 2
ExperimentBeginner

Balloon Rocket Race

Science, Engineering · Physics, Engineering

Send a balloon zooming along a string and discover how air pushes it forward.

25 to 40 min · 7 materialsView project

EduVistaHQ.com · Learn • Explore • Grow