How to explain mass to a child?
A simple mass definition for kids is: mass reflects the amount of matter (i.e., electrons, protons and neutrons) an object contains. We can place a scale on the moon and weigh an object there. The weight will be different because the strength of gravity is different. But the mass will be the same.
Bearing in mind, what is mass in simple words?Mass is a measure of the amount of matter in an object. Mass is usually measured in grams (g) or kilograms (kg). Mass measures the quantity of matter regardless of both its location in the universe and the gravitational force applied to it.
In view of this, how do you explain mass and weight to a child?Mass measures the amount of matter in an object (anything you can physically touch). Basically, mass is a measurement of the number of atoms in an object. Mass is typically measured in kilograms or grams. Weight measures the force of gravity pulling on an object.
In addition, they are often interested in what is the description of mass?mass. In physics, the property of matter that measures its resistance to acceleration. Roughly, the mass of an object is a measure of the number of atoms in it. The basic unit of measurement for mass is the kilogram. (See Newton's laws of motion; compare weight.)
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Related questions and answers
weight of the body is actually the gravitational force acting on it and mass of a body is the no. of particles present in it. therefore weight can be zero but mass can never be zero.
As your body grows, you will have more mass, which also means you will weigh more. That's because when you're on the earth, the amount of gravity that pulls on you stays the same. So when your mass changes, so does your weight!
1a : the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancy. b chemistry : the power of a fluid to exert an upward force on a body placed in it the buoyancy of water also : the upward force exerted.
It is more likely for an object to have a weight of zero because the weight is the measure of the gravitational force on an object. It is possible to weigh nearly 0 in outer space. Matter, however, is the measure of matter in an object.
Answer. at the centre of earth , the gravity becomes zero . In the absence of gravity ,there is a free fall condition,. that's why all bodies act as free falling condition occurs and all bodies lose their weight at the centre of gravity.
Unless someone is taking very precise measurements in a lab (see for example Cavendish's famous experiment which determined the gravitational constant, G), the force of gravity must include only really big objects (like the sun, the moon or a planet) to be noticeable.
Mass is a measure of how much force it will take to change that path. Mass depends on how much matter – atoms and so on – there is in an object; more mass means more inertia, as there is more to get moving. Weight, on the other hand, is a measure of the amount of downwards force that gravity exerts on an object.
An object floats when the weight force on the object is balanced by the upward push of the water on the object. If the weight force down is larger than the upward push of the water on the object then the object will sink. If the reverse is true then the object will rise – rising is the opposite of sinking.
So, in general, low reps with heavy weight tends to increase muscle mass, while high reps with light weight increases muscle endurance. Lifting heavy weights builds muscle, but constantly upping the weight exhausts the body. The nervous system must also adjust to the new fiber activation in the muscles.
Mass is how much stuff something is made of. Volume is how much space an object takes up. Find two objects with similar MASS.
Gravitational potential energy is negative at the surface of Earth, because work is done by the gravitational field in bringing a mass from infinity i.e work has to be done on a body, if it is taken away from the gravitational field of the earth. Thus, potential energy is negative.
Two forces act on an object when it enters water: a downward force called gravity and an upward force called buoyancy.
The true weight of a body will be zero where the gravitational effects are nil e.g. at the centre of Earth or deep in space far away from the given star or planet.
In common usage, the mass of an object is often referred to as its weight, though these are in fact different concepts and quantities. In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define), whereas weight is the force exerted on an object by gravity.
Mass is more fundamental because it remains constant at all places, irrespective of a change in place. But weight depends on acceleration due to gravity (g), which varies with location.
If an object floats in water, the weight of the water displaced is greater than the weight of the body immersed in water. Water is the only fluid that can provide buoyancy.
In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level.
It is denoted as g. Now for different planets the value of acceleration due to gravity is different. So, for a body to have no weight, the acceleration due gravity must be zero. Hence, it is possible that a body can have mass but no weight.
mass ( ) A measure of the amount of matter contained in a physical body. Mass is independent of gravity and is therefore different from weight. See Note at weight. An object's weight depends on its mass (the amount of matter it consists of) and the strength of the gravitational pull.
A: Mass is a measure of all the matter that makes up an object, and weight how much gravity is acting upon an object. Since we're on Earth and used to measuring things on Earth with Earth's gravity, if your mass is 50 kg, we say that you weigh 50kg. A scale on Earth would read 50kg, or 110lbs.
Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on that object. People often use the words “mass” and “weight” interchangeably because gravity is pretty much constant on Earth, so there isn't a difference between their values.
Can we determine the gravitational mass of a body inside an artificial satellite? No, artificial satellite is like a freely falling body and the weight of the body inside the satellite is zero.
Within most of the human—and animal—body, whether muscle, fat, blood or bone, is a lot of water. This means our bodies really are close to the density of water. But this activity can also help explain why some animals—and people—are more buoyant than others.
It is not possible for a body to have zero mass ( no body can exist without mass ) but a body can have zero weight.. Weight = Mass × Gravitational acceleration. At the center of the earth the gravitational acceleration is 0 so multiply 0 with mass and any no. multiplied with 0 is 0 so weight can be 0.
Gravity works the same way in water that it works in air or a vacuum -- but you have to consider the force of gravity on the water as well as on the object you put into it.
What are the three types of buoyancy? The three types of buoyancy are positive buoyancy, negative buoyancy, and neutral buoyancy. Positive buoyancy is when the immersed object is lighter than the fluid displaced and this is the reason why the object floats.
To find an object's mass using its weight, the formula is Mass equals Weight divided by the Acceleration of Gravity (M = W ÷ G).