Why is physical activity important for a child? Regular physical activity can help children and adolescents improve cardiorespiratory fitness, build strong bones and muscles, control weight, reduce symptoms of anxiety and depression, and reduce the risk of developing health conditions such as: Heart disease. Why is it important to participate in physical fitness assessment activities? […]
How do you get rid of x10 on calculator?
How do you get rid of x10 on calculator? Casio models: Press [SHIFT][MODE][6:Fix]. You are then prompted to enter a number between 0 and 9. The number you enter fixes the number of decimal digits your results will have. What does E 4 mean on calculator? The e−4 part means that the decimal point in […]
Why are diodes important?
Why are diodes important? Conducting an electric current in one direction Despite being nothing more than a simple two-pin semiconductor devices, diodes are vital to modern electronics. Some of their most common applications include turning AC to DC, isolating signals from a supply, and mixing signals. What are the applications of diodes? The application areas […]
Why is a propane torch lit inside a hot air balloon?
Why do humans hear better in air than underwater?
Why do humans hear better in air than underwater? On land, sound travels through air conduction. This means that sound waves travel through the air, causing your eardrum to vibrate. Researchers have determined that bone conduction allows us to hear sounds underwater that are much higher in pitch than sounds we hear on land. Can […]
Who used a compound microscope to see Chambers?
Who used a compound microscope to see Chambers? Robert Hooke What details can Electron microscopes reveal? As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects. What type […]
Are hydrogen balloons safe?
Are hydrogen balloons safe? “Since hydrogen is an unstable, inflammable gas, there is a great danger associated with hydrogen balloons. They easily explode and catch fire. “Flying balloons are filled with gas lighter than the atmospheric air, usually helium and hydrogen. Can hydrogen be used for balloons? Hydrogen is another gas lighter than air; it’s […]
How fast is 7 horsepower?
Which describes the role of carbon dioxide?
Which describes the role of carbon dioxide? Carbon dioxide is an atmospheric constituent that plays several vital roles in the environment. It is a greenhouse gas that traps infrared radiation heat in the atmosphere. It plays a crucial role in the weathering of rocks. It is the carbon source for plants. What is the importance […]
How is the movement of matter and energy different in an ecosystem?
How is the movement of matter and energy different in an ecosystem? Nutrients can also cycle out of an ecosystem. Energy enters an ecosystem at any level and leaves at any level, while the flow of matter does not. The flow of matter cycles freely between trophic levels and between the ecosystem and the physical […]