Mass vs. Weight10/6/2015

Mass● The amount of matter in an object.

Weight

● The size of the gravitational force acting on the object.

MassThe dumbbell is hard to lift because it contains a large amount of matter.

Weight

The dumbbell is hard to lift because of the large gravitational pull exerted on it by the Earth.

MassMass is measured on a BALANCE.

WeightWeight is measured on a SCALE.

Units of Measure

Mass is measured in GRAMS. Weight is measured in NEWTONS.

MassMass always stays the same.

Weight

Weight changes depending on the gravitational force of the planet.

Weight-changes with gravity!

● Earth has more mass than the moon● Objects weigh more on Earth because the

gravity is stronger● Stronger gravitational force = higher

weight

● The moon has less mass than Earth● Objects weigh less on the moon because

the gravity is weaker● Weaker gravitational force = lower

weight

Earth Moon

**Gravity of a planet depends on its mass

Mass vs. Weight Song :) Mass versus weight -- two measures for an object.They're not the same, let's all see why!To determine the mass, we use a balance to do it.We use a scale to measure weight.

Mass, measured in grams, or in kilograms,It's all about how much stuff - the object has!

Grams or kilograms (ba! ba! ba!)They're the units we use for mass. (for mass, for mass, for mass).Newtons are for weight (ba! ba! ba!)Weight's the measure of gravity's pull on the ob-ject.

So you can see, mass and weight aren't the same thing.Weight is the measure of gravity's pull!In contrast to weight, mass tells us how much matter, How much matter the object has.

Mass, measured in grams, or in kilograms,It's all about how much stuff - the object has!

Grams or kilograms (ba! ba! ba!)They're the units we use for mass. (for mass, for mass, for mass).Newtons are for weight (ba! ba! ba!)Weight's the measure of gravity's pull on the ob-ject.

Mass and weight, mass and weight, they're not the same.Mass and weight, mass and weight, they're not the same.Mass and weight, they're not the, not the same.

Grams or kilograms (ba! ba! ba!)They're the units we use for mass. (for mass, for mass, for mass).Newtons are for weight (ba! ba! ba!)Weight's the measure of gravity's pull on the ob-ject.Yeah!