You should do what mothers have done for ages, help him make a volcano. This simple project just involves shaping a volcano out of clay and leaving the hole. When ready fill the hole with dry ice and you have an exploding volcano. You can also use vinegar
There are lots of ideas for a 4th grade science project. One example is studying the solar system, learning about each planet that orbits Earth and the sun.
Yes, a project involving motors and light bulbs could be a suitable science project for fourth grade. It allows students to explore concepts of electricity, circuits, and energy transfer in a hands-on way. Just ensure the project is age-appropriate and safe for the students to conduct.
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A hypothesis for a fourth-grade science project on making a lava lamp could be: "If I mix oil and water with food coloring and add an effervescent tablet, then the colored water will rise and fall in the oil, creating a lava lamp effect." This hypothesis suggests that the differences in density and the reaction of the tablet will cause the desired visual effect.
Eat meat
A mousetrap car
No
Perhaps the quickest things to evaporate are not the safest things for a fourth grade student. May I suggest: * dry ice, carbon dioxide * liquid nitrogen * good old water
MAYBE................
A clay volcano
Yes
A good science fair project for a 6th grade level would maybe be something like the following: Does the average speed of a gymnast affect how their vault score? I'm trying to think of a good 7TH GRADE level gymnastics science fair project. advice?):