That sinking sensation

Have no idea for your science fair? Want to make something simple? What about artificial quicksand?

Question: At which temperature does artificial quicksand have the strongest pull?
Hyphothesis:

We think that the artificial quicksand will have a stronger pull in a cooler temperature.

Ingredients:

-Water 1/2 cup 120 ml  (just add 1 tablespoon if needed.)

-Cornstarch 1 1/2 cup 360ml

-1 measuring jug

-Spoon

-Bowl

-Food Colouring (optional)

Method:

1.) Add 1/2 cup of water and all 1 1/2 cup cornstarch in to a bowl.

2.)Stir with a spoon or your hands.

3.) Put your hand in it, if it pulls your hands congratulations you made quicksand!