Oobleck is a non-Newtonian fluid that exhibits both solid and liquid characteristics. It is a mixture of cornstarch and water, which creates a unique substance that behaves differently depending on the force applied to it.

Solid Characteristics:
When oobleck is at rest, it appears to be a liquid and can be poured like a typical liquid. However, if you apply pressure to it, it becomes a solid. This is because the cornstarch particles in the mixture become packed together, creating a barrier that prevents the oobleck from flowing like a liquid.

Liquid Characteristics:
When oobleck is not under pressure, it behaves like a liquid. It can flow and take the shape of its container. This is because the cornstarch particles are not packed together, allowing the oobleck to flow like a liquid.

Other Characteristics:
• Oobleck is non-toxic and safe to handle.
• It is not a permanent substance and will eventually dry out over time.
• It is a non-Newtonian fluid, which means its viscosity changes with the amount of force applied to it.
• Oobleck can be used for a variety of activities, such as sensory play, science experiments, and art projects.

In conclusion, oobleck is a unique substance that exhibits both solid and liquid characteristics. Its non-Newtonian properties make it a fun and interesting material to explore and experiment with.