By Meredith Lamothe
Welcome to the Science Explorers for Homeschoolers blog!
We will share here some of the projects, experiments and concepts that we explore in the Science Explorers for Homeschoolers classes, which are designed for ages 6-10.
Keep learning, Keep exploring.
Science Explorers for Homeschoolers: Water!
Water is amazing. Everything that is alive depends on water. Water can exist in THREE different states. Some things float in water, while other sink. There's so much to learn and experiment with when it comes to water.
Always start with the essentials! The Scientific Method is what scientists of every age use to learn things. There are four steps:
- Come up with a question.
- Observe and gather information to come up with a guess (hypothesis)
- Run an experiment to test your guess.
- Come up with an answer to your question.
For example you can use baking cookies as you go through the four steps.
- What will happen to this cookie dough when I put it in the over and bake it?
- Come up with a guess based on your observations.
- Experiment by putting the cookies in the oven.
- Come up with an answer to your question!
SINK OR FLOAT?
Try this, put an egg into a cup of water and observe what it does. Does it sank to the bottom? Does it float or have buoyancy (otherwise known as "bouncy buoyancy"? Now gradually add salt to the water. Eventually, after A LOT of salt is added, the egg will float to the top! When the egg was first put into the water it had a greater density than the water, so it sank. When salt was added to the water–it increased the density so that the egg was pushed up (buoyancy) and floated to the top of the glass.
Another great way of testing density is to make glitter tubes. We found that instead of floating or sinking, the glitter sailed along in the water, much like a feather floating in the air. This is because the glitter and the water have very similar density.