Class # 3: Safety Scramble - ppt video online download - Free Printable

Problem Analysis:

The task involves analyzing a cartoon depicting a science lab at Dangerville Middle School and identifying unsafe activities, correct procedures, and other elements related to lab safety. The goal is to use the Lab Safety Contract as a reference to evaluate the actions of the students in the cartoon.

Solution:

#### 1. List 3 unsafe activities shown in the illustration and explain why each is unsafe.
- Unsafe Activity 1: Eating and drinking in the lab (Bob).
- Why it's unsafe: Consuming food or drinks in a lab can lead to contamination of chemicals or biological agents, which could result in ingestion of harmful substances.

- Unsafe Activity 2: Playing with lab equipment (Ray and Tim).
- Why it's unsafe: Handling lab equipment carelessly or using it for non-scientific purposes can cause accidents, such as spills, fires, or injuries from broken glassware.

- Unsafe Activity 3: Using a cell phone while handling chemicals (Joe).
- Why it's unsafe: Distraction from using a cell phone can lead to mishandling of chemicals, causing spills, burns, or exposure to hazardous materials.

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#### 2. List 3 correct lab procedures depicted in the illustration.
- Correct Procedure 1: Wearing safety goggles (Carl).
- Why it's correct: Safety goggles protect the eyes from chemical splashes, dust, and other hazards that could cause injury.

- Correct Procedure 2: Using a fire blanket (Jim).
- Why it's correct: A fire blanket is an essential safety tool for extinguishing small fires or protecting oneself from flames, demonstrating preparedness for emergencies.

- Correct Procedure 3: Having a first aid kit available (visible on the wall).
- Why it's correct: A first aid kit ensures that minor injuries can be treated promptly, reducing the risk of complications.

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#### 3. What should Bob do after the accident?
- Bob should:
1. Rinse his hands immediately with water to remove any chemicals or contaminants.
2. Report the incident to the teacher so they can assess the situation and provide further assistance.
3. Avoid touching his face, eyes, or mouth until he has thoroughly cleaned his hands to prevent ingesting or absorbing harmful substances.

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#### 4. What should Sue have done to avoid an accident?
- Sue should have:
1. Worn safety goggles to protect her eyes from potential splashes or fumes.
2. Used proper lab techniques when handling chemicals, such as pouring carefully and avoiding distractions.
3. Kept her workspace organized to reduce the risk of knocking over equipment or spilling chemicals.

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#### 5. Compare Luke and Duke’s lab techniques. Who is following the rules?
- Luke:
- Luke appears to be following the rules by wearing safety goggles and handling equipment carefully. His posture and focus suggest he is concentrating on the experiment.

- Duke:
- Duke is not following the rules. He is leaning back in his chair, looking relaxed, and not paying attention to his work. This lack of focus increases the risk of accidents.

- Conclusion: Luke is following the rules, while Duke is not.

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#### 6. What are three things shown in the lab that should not be there?
- Item 1: Food and snacks (chips, soda).
- These items should not be present because they can contaminate the lab environment and pose a risk if mixed with chemicals.

- Item 2: Personal electronics (cell phones).
- Cell phones can distract students and increase the likelihood of accidents.

- Item 3: Non-lab-related items (e.g., toys or personal belongings).
- These items have no place in a lab and can create clutter, leading to accidents.

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#### 7. Compare Joe and Carl’s lab techniques. Who is doing it the correct way?
- Joe:
- Joe is using a cell phone while handling chemicals, which is highly unsafe. This distraction could lead to mishandling of chemicals or equipment.

- Carl:
- Carl is wearing safety goggles and appears to be focused on his work. His technique demonstrates proper lab behavior, including the use of personal protective equipment (PPE).

- Conclusion: Carl is doing it the correct way, while Joe is not.

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#### 8. What will happen to Ray and Tim when the teacher catches them?
- When the teacher catches Ray and Tim playing with lab equipment:
1. They will likely receive a warning or reprimand for their unsafe behavior.
2. They may be asked to leave the lab temporarily or for the remainder of the class.
3. They might face disciplinary action, such as detention or a write-up, depending on the severity of their actions and school policies.

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#### 9. List three items in the illustration that are there for the safety of the students in the lab.
- Item 1: Fire blanket.
- Used to smother small fires or protect individuals from flames.

- Item 2: First aid kit.
- Contains supplies for treating minor injuries, such as cuts, burns, or chemical exposures.

- Item 3: Eye wash station.
- Provides immediate flushing for eyes exposed to chemicals or irritants.

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#### 10. What is Betty doing wrong?
- Betty is smoking in the lab.
- Smoking in a lab is extremely dangerous because it can ignite flammable chemicals or create a fire hazard. Additionally, smoke can contaminate the lab environment and pose health risks to others.

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Final Answer:

\boxed{
\begin{array}{l}
1. \text{Eating and drinking in the lab (Bob), playing with lab equipment (Ray and Tim), using a cell phone while handling chemicals (Joe).} \\
2. \text{Wearing safety goggles (Carl), using a fire blanket (Jim), having a first aid kit available.} \\
3. \text{Bob should rinse his hands, report the incident, and avoid touching his face.} \\
4. \text{Sue should wear safety goggles, use proper lab techniques, and keep her workspace organized.} \\
5. \text{Luke is following the rules; Duke is not.} \\
6. \text{Food and snacks, personal electronics, non-lab-related items.} \\
7. \text{Carl is doing it the correct way; Joe is not.} \\
8. \text{Ray and Tim will likely receive a warning, be asked to leave, or face disciplinary action.} \\
9. \text{Fire blanket, first aid kit, eye wash station.} \\
10. \text{Betty is smoking in the lab.}
\end{array}
}