What are the 8 lab safety rules? General Laboratory Safety Rules Know locations of laboratory safety showers, eyewashstations, and fire extinguishers. Know emergency exit routes. Avoid skin and eye contact with all chemicals. Minimize all chemical exposures. No horseplay will be tolerated. Assume that all chemicals of unknown toxicity are highly toxic. What are the […]
How accurate are dial calipers?
How accurate are dial calipers? Quality dial, Vernier or digital calipers can all return an accuracy of about 0.001 inch over 6 inches if correctly used, although the accuracy is likely to diminish over longer spans. What are the 3 ways a dial caliper can be used to measure? There are 4 measurements you can […]
What is light quality?
What is light quality? Light quality is the wavelength (in nanometers, nm) within the electromagnetic spectrum; i.e. blue light is 450 nm and red light is 650 nm. Each wavelength has a different packet of radiation or energy (in J mol-1) called photons. What type of light causes damage to plants? UV-B radiation has been […]
Which layer is closest to space?
Which layer is closest to space? Layers of Earth’s Atmosphere exosphere—contains few particles that move into and from space. exobase—the lower boundary of the exosphere. thermosphere—temperature increases with height. The International Space Station orbits Earth in this layer. mesopause—the boundary between the mesosphere and the thermosphere; the coldest place on Earth. What layer are satellites? […]
How do the founder effect and bottlenecking differ?
How do the founder effect and bottlenecking differ? Bottlenecks and founder effects. Genetic drift can cause big losses of genetic variation for small populations. Population bottlenecks occur when a population’s size is reduced for at least one generation. A founder effect occurs when a new colony is started by a few members of the original […]
What is the difference between the two igneous rocks?
What is the difference between the two igneous rocks? The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the […]
How can I practice hockey at home?
How can I practice hockey at home? How to Practice Hockey Shooting at Home All Shooting Practice Is Good Practice. Time spent practicing is time spent improving, as long as you’re continuing to develop good habits. Choosing Your Space, Surface & Backboard. Set Up a Goal or Target. Pucks & Balls for At-Home Shooting. Shooting […]
What is an ideal weight?
What is an ideal weight? Body mass index (BMI) is a common tool for deciding whether a person has an appropriate body weight. It measures a person’s weight in relation to their height. According to the National Institutes of Health (NIH) : A BMI of less than 18.5 means that a person is underweight. A […]
Do egg cartons reduce sound?
Do egg cartons reduce sound? The various textural ripples and waves of egg carton-shaped materials do not absorb sound waves in their entirety. Instead, they break these sound waves up into multiple frequencies and echo them in various directions, which radically reduces the level of noise production and echo in your room. How can you […]
What are the examples of reflection?
What are the examples of reflection? Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection. What’s an example of a reflection […]