Question

hannah is making a fruit salad. she mixes some apple slices with orange and pineapple slices, and leaves the rest of the apple slices on the counter. a few minutes later, she notices that the apple slices on the counter have turned brown. she wonders what factors affect how quickly sliced fruit turns brown. she has the following supplies available:

• two apples
• two bananas
• a pineapple
• orange juice
• a kitchen knife

using only these supplies, which questions can hannah investigate with an experiment?
select all that apply.

• do large apple slices turn brown more quickly than small apple slices?
• do apple slices dipped in orange juice turn brown more slowly than plain apple slices?
• do apple slices mixed with banana slices brown more quickly than apple slices alone?
• do apple slices mixed with pineapple slices turn brown more slowly than apple slices alone?

Explanation:

To determine which questions Hannah can investigate, we analyze each option based on the available supplies:

1. "Do large apple slices turn brown more quickly than small apple slices?"

Hannah has two apples and a kitchen knife. She can cut one apple into large slices and the other into small slices, then observe the browning. This is testable.

1. "Do apple slices dipped in orange juice turn brown more slowly than plain apple slices?"

Hannah has apples, orange juice, and a knife. She can dip some apple slices in orange juice and leave others plain, then compare browning. This is testable.

1. "Do apple slices mixed with banana slices brown more quickly than apple slices alone?"

Hannah has apples, bananas, and a knife. She can mix apple slices with banana slices and compare with plain apple slices. This is testable.

1. "Do apple slices mixed with pineapple slices turn brown more slowly than apple slices alone?"

Hannah has apples, a pineapple, and a knife. She can mix apple slices with pineapple slices and compare with plain apple slices. This is testable.

Answer:

A. Do large apple slices turn brown more quickly than small apple slices?
B. Do apple slices dipped in orange juice turn brown more slowly than plain apple slices?
C. Do apple slices mixed with banana slices brown more quickly than apple slices alone?
D. Do apple slices mixed with pineapple slices turn brown more slowly than apple slices alone?

(All options A, B, C, and D are investigable with the given supplies.)