Category: Physics

How many tectonic plates are on the earth? Tectonic shift is the movement of the plates that make up Earth’s crust. The Earth is made up of roughly a dozen major plates and several minor plates. The Earth is in a constant state of change. Earth’s crust, called the lithosphere, consists of 15 to 20 […]

What are 3 things you can do to increase reaction rate? The reaction rate can be increased by the action of one or more of these factors. Use a Catalyst. A catalyst is a substance that can alter the rate of a chemical reaction. Increase the Temperature. Concentrate of the Reactants. Increase the Surface Area […]

What is the actual name of a merry go round? carousel How dangerous are merry-go-rounds? Sometimes children get on and off the piece of equipment while it is rotating. These can be dangerous because it is hard for children to know how to get on and off while the merry go round is moving. It […]

What are the 5 non-renewable resources? Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs. What is good about non-renewable resources? The […]

How do you know if tubes are open or closed? Open and closed ends reflect waves differently. The closed end of a tube is an antinode in the pressure (or a node in the longitudinal displacement). The open end of a tube is approximately a node in the pressure (or an antinode in the longitudinal […]

What are the 3 most important issues facing us in the 21st century? Among these are jobs and education, economic inequality, an aging population with health problems, and climate change and energy needs. What are the greatest health risks in the 21st century? The four major NCDs, accounting for 80% of all premature NCD-related deaths […]

What is an example of shear force? Scissors A pair of scissors is a classic example to demonstrate shear force. When an object, for example, a piece of paper is placed between the two metal blades of a pair of scissors, it gets divided into two parts only because of the shear force. What’s an […]

What is the ratio of distance and speed? The speed of thief is 60 km/hr, so he has covered 30 km in 30 minutes. The ratio of speeds of thief and police is 60: 80 or 3: 4. Excluding the first 30 minutes, the thief and the police have run for the same time. So […]

How do you get static out of clothes without dryer sheets? 7 Green Ways to Ditch That Static Cling Without Resorting to Toxic Dryer Sheets Hang Dry. The best natural way to eliminate static in laundry is to hang dry everything. Dry Synthetic Fabrics Separately. Reduce Drying Time. Vinegar Fabric Softener. Wool Dryer Balls. Vinegar […]

What happens when two objects are charged by contact? When two neutral objects come into contact–especially in a dry environment–electrons can be knocked loose from one object and picked up by the other. The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged. What is an example of […]