Nano Tech Updated

Part A. What is the main reason nanoscale materials are useful in many applications?

• They have different properties than larger-scale materials.

• They are easier to see under conventional microscopes.

• They are more expensive to produce than larger materials.

• They are only used in biology and chemistry.

Part B. Which detail from the article best supports the answer to Part A?

• "Nanotechnology is the study and application of extremely small things and is used across all other science fields, such as chemistry, biology, physics, materials science, and engineering."

• "Nanoscale materials also have far larger surface areas than similar volumes of larger-scale materials, meaning that more surface is available for interactions with other materials around them."

• "Researchers have copied the nanostructure of lotus leaves to create water-repellent surfaces."

• "Scientists are also creating antimicrobial surfaces that mimic the nanoscale structures on cicada wings."

Part A: How does biomimicry contribute to advancements in nanotechnology?

• By copying and applying natural nanoscale structures to solve human challenges.

• By using traditional engineering techniques to create new technology.

• By increasing the cost of manufacturing nanoscale materials.

• By replacing the need for further scientific study at the nanoscale.

Part B: Which example from the article best illustrates biomimicry from part a?

• "Researchers have copied the nanostructure of lotus leaves to create water-repellent surfaces."

• "Wearable sensors for plants enable measurements of water use in crops."

• "Scientists are developing stronger, lighter, more durable materials."

• "Nano-enabled microscopic devices may one day let doctors diagnose and treat diseases."

Part A: What is the main idea of the "Into the Future" section?

• Nanotechnology is already producing breakthroughs and has the potential for further advancements in various fields.

• Scientists have solved all the challenges associated with nanotechnology.

• Nanotechnology is useful only in medical applications.

• The future of nanotechnology is uncertain due to lack of interest.

Part B: Which detail from the article best supports the answer to Part A?

• "Nano-enabled diagnostics will allow doctors to detect disease at its earliest stages."

• "Today, many of our nation’s most creative scientists and engineers are finding new ways to use nanotechnology to improve the world in which we live."

• "A sheet of paper is about 100,000 nanometers thick."

• "You could charge your phone in your pocket as you walk around."

Part A: Why do nanoscale materials have unique properties compared to larger-scale materials?

• They have larger surface areas that increase their interactions.

• They are made of different elements than larger materials.

• They can have different electrical, magnetic, or optical properties.

• They always dissolve in water more easily than larger materials.

Part B: Which two details from the article best support the answer to Part A? (Select two.)

• "Nanoscale materials also have far larger surface areas than similar volumes of larger-scale materials, meaning that more surface is available for interactions with other materials around them."

• "The gecko’s ability to climb has inspired researchers to develop gloves with nanoscale features like the ones on a gecko’s foot."

• "Some [nanoscale materials] are better at conducting electricity or heat, some are stronger, some have different magnetic properties, and some reflect light better or change colors depending on their size."

• "A sheet of paper is about 100,000 nanometers thick."

• "Scientists are developing stronger, lighter, more durable materials."