Yeast Growth Experiment Observations

Bailey Palmer demonstrates how organisms obtain energy in ecosystems using a simple experiment with watermelon and yeast. The demonstration aligns with third-grade educational standards, focusing on ecosystem dynamics and social interactions. The procedure involves observing yeast growth on watermelon over three hours, considering environmental conditions. The experiment concludes with a discussion on energy sources for organisms, including producers, consumers, and decomposers.

What is the first material needed for the demonstration?

• A slice of watermelon

• A piece of bread

• A tablespoon of sugar

• A cup of water

Where can you purchase the materials needed for the demonstration?

• Target

• Local grocery store

• Walmart

• Amazon

Which educational standards does the demonstration align with?

• LS1 and LS2

• LS2.C and LS2.D

• LS3.A and LS3.B

• LS4 and LS5

What is the first step in the experiment procedure?

• Place the watermelon in sunlight

• Heat the watermelon

• Add yeast to the watermelon

• Record observations

How often should observations be recorded during the experiment?

• Every 30 minutes

• Every hour

• Only at the end of the experiment

• At hours one, two, and three

What is the purpose of placing the watermelon in a warm place?

• To prevent the watermelon from spoiling

• To help the yeast grow

• To make the watermelon sweeter

• To dry out the watermelon

What alternative method can be used to provide warmth if it's winter?

• Wrap it in a blanket

• Use a heat lamp

• Use a microwave

• Place it near a heater

What should be observed by the end of the third hour in the experiment?

• The yeast has disappeared

• The watermelon has changed color

• The yeast has grown

• The watermelon has dried out

What does the yeast obtain from the watermelon to grow?

• Salt

• Proteins

• Water

• Sugar and nutrients

What broader topic can be discussed after the experiment?

• Weather patterns

• Animal behavior

• Plant growth

• Food chains and ecosystems