2024 Fall Aquatics Semester Test

Front

If a laboratory fire erupts, immediately _________.

Back

Notify your instructor.

Answer explanation

In the event of a laboratory fire, the first step is to notify your instructor. They are trained to handle emergencies and can take appropriate action, ensuring everyone's safety. Running for an extinguisher or throwing water may worsen the situation.

Front

You are heating a substance in a test tube. Always point the open end of the test tube ________.

Back

Away from all people.

Answer explanation

Always point the open end of the test tube away from all people to prevent any accidental spills or splashes from causing harm. This ensures safety in the lab environment.

Front

True or False: Return all unused chemicals to their original containers.

Back

False

Answer explanation

False is correct because returning unused chemicals to their original containers can lead to contamination or mislabeling. It's safer to follow proper disposal protocols instead.

Front

Long hair should be ____________ in the laboratory.

Back

tied back

Answer explanation

Long hair should be tied back in the laboratory to prevent it from coming into contact with hazardous materials or equipment, ensuring safety for the individual and maintaining a clean working environment.

Front

Hot glass looks the same as cold glass.

Back

True

Answer explanation

Hot glass and cold glass appear the same because both are transparent and do not show significant visual differences to the naked eye. Therefore, the statement is true.

Front

The proper technique for smelling chemicals is ______________

Back

wafting

Answer explanation

The proper technique for smelling chemicals is wafting, which involves gently moving air towards your nose to avoid direct inhalation. This method minimizes exposure to potentially harmful vapors.

Front

Why is keeping your work area neat and clean important?

Back

It helps prevent accidents.

Answer explanation

Keeping your work area neat and clean is crucial as it helps prevent accidents. A cluttered space can lead to trips and falls, while an organized area promotes safety and efficiency.

Front

After completing an experiment, all wastes should be

Back

disposed of according to your teacher's directions

Answer explanation

After completing an experiment, it is crucial to dispose of all wastes according to your teacher's directions to ensure safety and proper handling of materials. This choice promotes responsibility and adherence to safety protocols.

Tags

NGSS.HS-LS2-7

Front

When should approved eye protection devices be worn in the laboratory?

Back

Any time chemicals, heat, or glassware are used.

Answer explanation

Approved eye protection devices are essential to protect your eyes from potential hazards like chemicals, heat, or glassware in the laboratory, making the correct choice 'any time chemicals, heat or glassware are used'.

Front

When is it OK to eat or drink at the lab tables?

Back

Never

Answer explanation

Eating or drinking at lab tables is never allowed to maintain a clean and safe environment. Food and drinks can contaminate experiments and equipment, so the correct choice is 'Never'.