Knife Skills

What is the primary purpose of using a knife in scientific experiments?

• To cut materials precisely

• To stir solutions

• To measure liquids

• To heat substances

Which of the following materials is most suitable for a knife blade used in laboratory settings?

• Plastic

• Wood

• Stainless steel

• Glass

Tags

NGSS.MS-ETS1-1

In a dissection experiment, why is it important to use a sharp knife?

• To prevent damage to the specimen

• To ensure accurate cuts

• To avoid contamination

• To reduce the risk of injury

What safety equipment should be used when handling knives in a laboratory?

• Safety goggles

• Lab coat

• Cut-resistant gloves

• Ear plugs

How does the angle of a knife blade affect its cutting ability?

• A smaller angle increases sharpness

• A larger angle increases sharpness

• Angle does not affect sharpness

• Only the material affects sharpness

Which scientific principle explains why a sharp knife cuts better than a dull one?

• Newton's Third Law

• Bernoulli's Principle

• Pascal's Law

• Pressure = Force/Area

What is the best way to maintain the sharpness of a laboratory knife?

• Store it in a damp place

• Use it frequently

• Sharpen it regularly

• Wash it with soap

In a chemical experiment, why might a knife be used to prepare samples?

• To mix chemicals

• To cut samples into smaller pieces

• To measure temperature

• To observe reactions

What is the effect of using a dull knife on a biological sample?

• It preserves the sample

• It causes more damage to the sample

• It makes the sample more visible

• It has no effect

Which of the following is a common use of knives in scientific fieldwork?

• To write notes

• To cut plant samples

• To measure wind speed

• To test soil pH