During a hot summer day, Lincoln and Nash are playing outside. They notice that as they sweat, they start to feel cooler. What happens to their body temperature when sweat evaporates?

• It increases

• It stays the same

• It lowers

• It fluctuates

During a hot summer day, Grayson noticed he was sweating a lot after playing soccer. What waste product is excreted through sweat?

• Glucose

• Oxygen

• Urea

• Protein

During a science experiment, Hannah and Payton measured the pH level of a solution and found it to be below 7. What does this indicate about the solution?

• Neutral

• Alkaline

• Acidic

• Basic

Kohl and Ezra are conducting an experiment in their science class to measure the acidity of various substances. They decide to test lemon juice. What is the pH level of lemon juice?

• 2

• 5

• 7

• 10

Elainna and Lux were discussing skincare routines. Lux asked, "Which of the following factors affects your skin's pH?"

• Sebum and skin moisture

• Hair color

• Eye color

• Height

Cort and Hunter are studying how different factors affect skin pH. What role do genetics and age play in skin pH?

• They have no effect

• They affect skin pH

• They change hair texture

• They influence eye color

During a science class experiment, Ayla and Brie are testing how different detergents impact the skin. What effect do detergents have on your skin's pH?

• They make skin softer

• They affect skin's pH

• They change skin color

• They have no effect

After a long day of playing baseball, Nash decided to take a shower. What does washing help remove?

• Only sweat

• Only bacteria

• Sweat, bacteria, and dirt

• Only dirt

Cort noticed an unpleasant smell after gym class. What should he do to help reduce it?

• Using lotion

• Washing your body

• Wearing a hat

• Eating healthy

Landon and Kolsen are working on a science project where they need to determine the main focus of their research document. What is the main topic of the document?

• Temperature measurement

• pH levels and data collection

• Chemical reactions

• Color theory