Today we Investigated Eggshells. We tested the strength of ordinary eggshells.
I think the chicken egg is strong because they can't break out of it easily and the mom would break it if she sits on it if it was fragile. ...Jaylee I think an egg shell is strong because it takes about 10-15 pecks for a baby bird to get out. Also because they can hold up a text book. I love science. ...Katie
I think the chicken egg is strong. It held 7 math journals before it broke. I think it's strong because it has lots of calcium....Alicia

I think an egg shell is strong because it held up 13 notebooks, but the notebooks were light so that's why we got so many. ...Shamika

I think a chicken egg is strong because if a mom or dad bird sits on it it will crack. ...Mariah

I am not sure if it is strong because if you drop an egg it will break, but if an eagle sits on it, it doesn't. ...Nolan

I think an egg shell is weak because when the babies hatch they are not strong, but they can get out. ...Adrian

I think it's pretty strong so it would kinda keep it safe from predators. ...Zac

A chicken egg has tiny holes in the egg so oxygen will be able to get through but water cannot get through and suficate the chick. ...Lisa

Vinegar dissolves the egg shell and sucks the nutrients right out of it. ...Sean

I think the size of an egg shell would affect its strength. To check I would take books or other material and set them on the egg. ...Brandon M.

When we put the egg shell in vinegar it made the egg shell whiter and softer. ...Shamika

A shell of an egg helps a developing chick to survive because when it rains, water doesn't get in. Also it helps so no other animals eat the baby bird. ...Jami

After five minutes in vinegar the egg shell is disintegrating. ...Dylan W.

Vinegar makes the egg shell softer. It makes air bubbles come out of the shell. ...Nicholas

Vinegar softened the shell. It got really soggy. ...Mikayla

Vinegar dissolved the calcium in the shell. ...Tyler

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