Egg in Saltwater

egg in saltwater

I love ridiculously easy science experiments.  I don’t want to create a shopping list just to do something with my kids.  I know, sometimes it is worth.  But most times I just want to grab a few things around the kitchen and be done.

Materials:

  • egg
  • salt
  • water
  • glass or bowl

This is a great activity to do after “sink or float.”  Hypothesize if an egg will float in water.  Test the hypothesis.  Then add salt and try it again.  Hint- you have to add LOTS of salt!  How does it work?  A raw egg has more density than tap water.  Adding salt increases the density of water until at some point it is greater than the egg.  Then the egg floats.  Try the experiment with other materials.  Talk about swimming in saltwater vs. freshwater.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s