Across
- 4. The process of placing things into groups based on their similarities is called ________________________.
- 6. We use our ______________to sniff a flower.
- 7. We use ______________________ to see a very small organisms.
Down
- 1. Materials that do not dissolve in water is called ___________________.
- 2. Ceramic is made from _________________.
- 3. Pencil will _________________if you put it on water.
- 5. _____________is the main source of heat energy.