What type of ozone is bad? Stratospheric ozone is “good” because it protects living things from ultraviolet radiation from the sun. Ground-level ozone, the topic of this website, is “bad” because it can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as […]
How can an object accelerate towards the center without getting closer to the center?
How can an object accelerate towards the center without getting closer to the center? If an object is in uniform circular motion, then it is accelerating towards the center of the circle; yet the object never gets any closer to the center of the circle. It maintains a circular path at a constant radius from […]
Why we should not ban smoking?
Why we should not ban smoking? Scientists agree that smoking is dangerous. Tobacco smoke can cause cancer, strokes and heart disease. Smoking does not just harm the smoker – it also harms people nearby, who breathe in the smoke (this is called “passive smoking”). Smokers choose to smoke, but people nearby do not choose to […]
Which is the end product of photosynthesis?
Which is the end product of photosynthesis? Glucose is the simple food which is prepared first in the process of photosynthesis. Glucose and oxygen are the final products of photosynthesis. What is the raw materials and end products of photosynthesis? The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, […]
Which best describes the motion of an object?
Which best describes the motion of an object? You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing. Even things that appear to be at rest move. Which formula is used to find an objects acceleration? […]
What is the shortest unit in music?
What is the shortest unit in music? Music Test One Question Answer What is the smallest unit of music? A note Define phrases. Brief musical statements used to mimic speech In music, what is like a period in a sentence? Cadence Define cadence. A point of arrival, where the melody comes to rest What is […]
What are two substances?
What are two substances? Two Main Types of Pure Substances Elements and compounds are the two types of pure substances. Examples of common elements include carbon, nitrogen and hydrogen. They consist of one type of atom and cannot break down into something else. Every pure carbon substance, for example, has the same particles in it. […]
What are the characteristics of mid-ocean ridges?
What are the characteristics of mid-ocean ridges? Principal characteristics. Oceanic ridges are found in every ocean basin and appear to girdle Earth. The ridges rise from depths near 5 km (3 miles) to an essentially uniform depth of about 2.6 km (1.6 miles) and are roughly symmetrical in cross section. They can be thousands of […]
How are matter and volume connected?
How are matter and volume connected? Matter is all the “stuff” that exists in the universe. It has both mass and volume. Mass measures the amount of matter in a substance or an object. Volume measures the amount of space that a substance or an object takes up. What is relation between volume and capacity? […]