Question

7. Two trials were conducted with these condition:
Small egg dropped from 5 m onto 1-inch foam
Jumbo egg dropped from 5 m onto 1-inch foam
What could be the purpose of these two trials?
a. To determine if changing the egg size affects the drop height
b. To determine how the landing surface affects the safety of the egg
c. To determine the effect of mass of an egg upon the force it experiences.
d. To determine the effect of the drop height upon the force the egg experiences.

8. When a jumbo egg was dropped from 5meters onto a 1-inch foam surface, it fractured. Which of the following changes in conditions would lead to a safe landing? Select all that would.
a. Change the egg size to a large egg
b. Change the drop height to 1 meter
c. Change the drop height to 10 meters.
d. Change the landing surface to a hard floor
e. Change the landing surface to a box of foam

9. Which of the following variations would increase the force experienced by an egg upon landing? select all that apply.
a. Increase the mass of the egg
b. Decrease the mass of the egg
c. Increase the drop height
d. Decrease the drop height
e. Change the surface to a hard floor.
f. Change the surface to a box of foam

Background: This Interactive involves observing the results of dropping an egg onto a surface. The size of the egg, the height from which it is dropped, and the characteristics of the landing surface can be varied. The Interactive is based on the impulse-momentum change theorem. The questions below target a Interactive ability to reason scientifically.

Answer 1

7. The answer is c. To determine the effect of mass of an egg upon the force it experiences.; since the significant variable in the two trials is the mass of the egg.

8. The answers are :

• a. Change the egg size to a large egg,  larger the size, safer from fracture
• b. Change the drop height to 1 meter; lesser the drop height, less vulnerable from fracture
• e. Change the landing surface to a box of foam; thicker the foam, safer will be the dropped egg.

9. The answers are :

• a. Increase the mass of the egg, as mass increases, force increases
• c. Increase the drop height , as height increases, force increases.