Science Safety And Science Tools Quiz

Explanation
Safety goggles must be worn when using fire, sharp instruments, and chemicals because all of these activities pose potential risks to the eyes. Fire can produce sparks or debris that can cause eye injuries. Sharp instruments can cause accidental cuts or punctures to the eyes. Chemicals can splash or emit fumes that can irritate or damage the eyes. Wearing safety goggles provides a barrier of protection against these hazards and helps prevent eye injuries.

Explanation
Performing experiments can be a valuable learning experience, but it is important to prioritize safety. By seeking the teacher's permission before conducting an experiment, the student ensures that they have the necessary guidance and supervision to ensure their safety and the safety of others. The teacher can provide instructions, materials, and knowledge that will enhance the learning experience and prevent any potential accidents or mishaps. Therefore, obtaining the teacher's permission is essential before conducting any experiment.

Explanation
Eating in the classroom is allowed only when the teacher gives permission. This implies that the student should not eat in the classroom without the teacher's consent. It is important to follow the rules and regulations set by the teacher to maintain a safe and orderly learning environment.

Explanation
Keeping the work area neat and clean is important because it helps prevent accidents. Clutter and mess can create hazards and increase the risk of accidents. By maintaining a clean and organized workspace, potential dangers such as tripping over objects or knocking things over can be minimized. A tidy work area promotes a safe environment and reduces the likelihood of injuries or mishaps.

Explanation
The correct answer is "Both a and b" because it is important to clean the equipment both before and after using it. Cleaning the equipment before use ensures that it is free from any dirt or contaminants that could affect its performance or cause harm. Cleaning the equipment after use helps to maintain its longevity and prevent the buildup of any residue or bacteria. By doing both, you can ensure that the equipment is in optimal condition and safe to use.

Explanation
During a lab or activity, it is important to seek guidance and clarification if unsure about what to do. Asking the teacher for assistance is the best course of action as they are responsible for providing instructions and can provide guidance tailored to the specific task. Asking a lab partner may be helpful, but they may also be unsure or provide incorrect information. Sitting and waiting quietly is a passive approach that may waste time and hinder progress. Guessing is not advisable as it can lead to mistakes or accidents. Therefore, asking the teacher is the most appropriate and reliable option.

Explanation
Wearing glasses does not eliminate the need for goggles. Goggles provide additional protection for the eyes, especially in certain situations such as swimming, working with chemicals, or participating in sports. Glasses may not provide adequate coverage or protection from potential hazards. Therefore, it is incorrect to say that goggles are not needed if you wear glasses.