What are the harmful effects of photochemical smog? Harmful effects of photochemical smog: It corrode metals, stones, rubber and painted surface. It causes serious health problems to senior citizens, children and people with heart and lung problems which lead to emphysema, bronchitis, asthma. What are the negative environmental and health impacts of smog? Smog can […]
Which graph shows the motion of the car?
Which graph shows the motion of the car? The speed-time graph represents the motion of a car travelling along a straight level road. What is secondary motion SSM? Secondary motion is totally event-dependent. Tertiary motion is especially fast object motion. Who decides the agenda for a meeting? Who Should Create the Meeting Agenda? Board meeting […]
What are five ways to make an observation?
What are five ways to make an observation? Explain that an observation is information we gather about something by using our senses. List the five senses of sight, hearing, taste, touch, and smell. Use their senses to make observations about things in the classroom. What are the direct observation methods? Observations can also be either […]
What type of object a chair a painting and a shoe are?
What are long waves?
What are long waves? Long waves, also called infragravity waves, have a wave period of 30 seconds to several minutes. Astronomical tides represent one important example of long waves. Long waves can occur in shallow water, such as the Chesapeake Bay. But long waves are not limited to what is normally considered shallow water. What […]
What is another word for isotope?
What is another word for isotope? What is another word for isotope? element form variant version What is the correct statement about isotopes? Isotopes of only heavier elements are radioactive in nature as they have large difference in the number of protons and neutrons. Thus, we can conclude that the statement isotopes of the same […]
What is the correct pathway for vision?
What is the correct pathway for vision? The visual pathway consists of the retina, optic nerves, optic chiasm, optic tracts, lateral geniculate bodies, optic radiations, and visual cortex. The pathway is, effectively, part of the central nervous system because the retinae have their embryological origins in extensions of the diencephalon. Which controls the amount of […]
Why does a rocket keep accelerating?
Why does a rocket keep accelerating? As the rocket velocity increases, it encounters air resistance, or aerodynamic drag, which opposes the motion. Drag increases as the square of the velocity. The thrust of the rocket must be greater than the weight plus the drag for the rocket to continue accelerating. Do Newton’s laws apply in […]
Why is Group 17 so reactive?
Why is Group 17 so reactive? The halogens are located on the left of the noble gases on the periodic table. Because the halogen elements have seven valence electrons, they only require one additional electron to form a full octet. This characteristic makes them more reactive than other non-metal groups. What are the 3 groups […]
Which country has no volcanoes?
Which country has no volcanoes? Even though Australia is home to nearly 150 volcanoes, none of them has erupted for about 4,000 to 5,000 years! The lack of volcanic activity is due to the island’s location in relation to a tectonic plate, the two layers of the Earth’s crust (or lithosphere). In which country volcano […]