бекишева 2 семак / table 2
.docxReading Review
Answer the questions below.
Questions about the article |
Your notes |
|---|---|
In your own words describe nanotechnology. |
Nanotechnology is the science of creating or solving problems by working with materials at the scale of atoms and molecules. |
How big is a nanoparticle? |
A nanoparticle is about 1 nanometre in size, which is 0.000000001 meters, or 10⁻⁹ of a metre. |
Name two nanoparticles. |
Atoms and molecules (e.g., carbon nanotube). |
Give examples of products that contain nanoparticles. |
Sunscreen, paint, and inkjet paper. |
How can particles at a nanoscale be different from the same material at a larger scale? |
At the nanoscale, materials can have different colors, strengths, or weights compared to their larger-scale versions. For example, carbon nanotubes are much stronger and lighter than steel. |
How may nanotechnology be used in the future? |
It could be used in smaller computers, memory chips, medical nanobots for surgery and cancer treatment, and to clean pollution in oceans. |
What concerns do some people have about using nanoparticles in products? |
People worry that nanoparticles could enter human cells and harm health, or that they could negatively impact the environment if released. |
The article introduces nanotechnology as the science of working with extremely small particles, called nanoparticles, at the atomic and molecular level. It explains how materials behave differently at the nanoscale, making them useful in various products like sunscreen and paint. The article also discusses potential future uses of nanotechnology in fields such as medicine, computing, and environmental cleanup. However, it highlights concerns about the possible health and environmental risks of nanoparticles due to their small size and unknown effects.