Mass and Weight

What is mass?

• It is the measure of how much material an object contains.

• It is a measure of the force of gravity pulling down on an object.

What is weight?

• It is the measure of how much material an object contains.

• It is a measure of the force of gravity pulling down on an object.

Tags

NGSS.MS-PS2-4

What is the law of conservation of mass?

• It states that the mass of a whole object is equal to the sum of the masses of its parts.

• It states that the mass of a whole object is unequal to the sum of the masses of its parts.

• It states that the mass of part of an object is equal to the sum of the masses of its parts.

• It states that the mass of part of an object is unequal to the sum of the masses of its parts.

Tags

NGSS.MS-PS1-5

Mrs. B cut up an apple into five different pieces. Each piece had a mass of 9 grams. According to the law of conservation of mass, what is the total mass of the whole apple?

• 9 grams

• 27 grams

• 36 grams

• 45 grams

Tags

NGSS.MS-PS1-5

My scoop of ice cream has a mass of 30 grams. I left it sitting in the sun, and it started to melt. Now it has a mass of 24 grams. What is the mass of the liquid ice-cream that has melted from the scoop?

• 30 grams

• 24 grams

• 6 grams

• 10 grams

Which is likely to have the largest mass?

• A brick

• A pencil

• A banana

• A pair of dice

Which is likely to have the smallest mass?

• A basketball

• A dime

• A large coke from McDonald's

• A laptop computer

List the objects from smallest to largest mass.

• laptop, cereal bowl, doll, mechanical pencil

• cereal bowl, laptop, doll, mechanical pencil

• mechanical pencil, cereal bowl, doll, laptop

• mechanical pencil, doll, cereal bowl, laptop

According to the law of conservation of mass, what is equal to the mass of a whole object?

• The difference between its parts

• The measure of the force of gravity on the object

• The mass of a similar object

• The sum of its parts

Tags

NGSS.MS-PS1-5

What tool do you use to measure mass?

• measuring cup

• pan balance

• ruler

• thermometer