1. Class III A “George Cosbuc” School Baia Mare, Romania

2. if you remove the peel sink. Apple and lemon floating Explanation: Small holes in the lemon peel contain air bubbles that are floating possible. Removal of the shell leads to diving. Materials: lemon a glass bowl water

3. Same experience, but with an apple Apple shelled not sink Apple floats, not peeled lemon Materials: Lemon Apple a glass bowl water

4. Materials: White Carnation red ink, green, blue scissors glass vase/ tubes - tubes filled with water being added to every tube of a different color ink - strain Carnation caring cut in two parts until surrendered flowers. - Each half of the stem is inserted into a tube with colored water. After several hours the flowers begin to color.

5. After several hours

6. Materials: salt, colored ink, water, small saucers

7. Plants need water