Experiments To Learn About: Water& Air
BOUNTY OF BUBBLES
What to Do
1. Fill large containers with water (prepare enough containers for each pair of children to have one). Ask the children to suggest ways to make bubbles in the water. Invite them to add dishwashing soap and 3 capfuls of glycerine (available at drugstores) to each container.
2. Punch airholes in one end of the straws (this will keep children from breathing in the water), and then give them to the children. Ask them to hold their free hand a few inches from the end of the straws. Let the children blow through the straws, and ask if they can feel the air coming out.
3. Ask the children what they think will happen when they blow air into the water. Have them place the straws in the water and then blow bubbles. Guide the children to compare what happens when they exhale short breaths and what happens when they exhale long breaths.
4. Invite the children to add food dye to the water and blow a rainbow of bubbles.
- Encourage children to have fun making air paintings. Help them pour small amounts of paint onto sheets of paper. Give children straws and let them try to move the paint by blowing at it.
- Help children bend and tie pipe cleaners together to form bubble wands in interesting shapes. Guide them to add one pipe cleaner as a handle. Then they can dip the pipe cleaners into soapy water and blow bubbles in a variety of fun shapes.
Children learn that air blown into water creates bubbles. They observe cause-and-effect relationships. They also learn that air has the force to move certain materials.
What to Do
1. Put out large transparent containers filled with water. Let the children add one color of food dye, such as yellow, and stir it with a spoon (a few drops should be enough).
2. Give children another color, such as blue. Ask them what they think will happen when they add it to the yellow water. Then have them add a few drops. (Adding too much food dye will make the water dark and murky.)
3. Guide the children to observe as the colors mix and create a new one. How many colors can they see in the water?
4. Help children clean out the containers and add fresh water. Then encourage them to mix and make different colors.
- Invite the children to add food coloring to spray bottles filled with water. Encourage them to spray the different colors onto butcher paper or a paved outdoor surface and watch the colors mix together.
- Fill transparent containers with white paint. Let the children add a different color of paint to each container and mix the colors.
- Cut eyeholes out of sheets of cardboard. Help the children make sunglasses by gluing colored transparent wrap to the cardboard. Ask them to describe how things look through the colored glasses.
Children learn that clear water can be dyed various colors. They determine that certain colors mix to form new ones.