Hobbies And Interests
Lift Ice Cube
Lift an ice cube out of a glass of water for your science fair experiment without getting wet. Fill a glass of water. Place an ice cube in the glass and place the end of a string on top of the ice cube. Keep the string still and sprinkle a pinch of salt onto the ice cube where the string is placed. Leave it sit for a few minutes. Lift the string up and observe the ice cube come out of the water. The salt melts the ice cube some in order for the string to set in and freeze on the top of the ice cube.
Melting Ice
Conduct an experiment to see if as ice melts in a glass of water, if the glass will spill over the side. Fill a glass to the very top with warm water. Add an ice cube to the glass carefully without spilling any water. Observe the water level as the ice cube melts. Even with an ice cube melting in a full glass of water, the water does not overflow. This is because as water freezes to ice, the water molecules expand and take up more space than liquid water. Since the water from ice expands, it takes up less space than the actual ice and the water level remains the same. You can also test to see how many ice cubes it takes to have the glass overflow. Take pictures and present your information in a poster board presentation for your science fair project.
Melting Times for Ice in Different Substances
Test to see which substance melts ice the fastest. Use different substances such as table salt, road salt, sand, fertilizer, cat litter and soil. For each substance use one tray of ice. Empty the ice into a large bowl and sprinkle 3 tbsp. of the substance onto the ice. Record the amount of time it took in order for all of the ice cubes to melt. Remember to check the room temperature so that it is the same during each trial. Create a graph to illustrate the rate at which the ice cubes melting in each product. Present your presentation in a poster board at your science fair.
Dry Ice Volcano
Create a volcano for your science fair project using dry ice. Form a volcano using brown paper bags. Cut the brown paper bag and place the pieces around a cylinder type container. Form the paper bag to resemble a volcano. Add red paint to the paper bags to look like lava. Add steaming hot water to the container. Add pieces of dry ice to the hot water. The dry ice should fog and it will look as if smoke is coming from the top of the volcano. During your science fair presentation, add small amounts of dry ice to the hot water to continue the volcanic eruption.