FOSS Measurement - Mass

Which of these standard units of MASS is used in science?

• gram

• ounce

• pound

• ton

A good estimate of the MASS of a sheet of paper is

• 5,000 g.

• 500 g.

• 50 g.

• 5 g.

On the left side of the balance there is a 10 g. mass piece and a 20 g. mass piece. On the right side of the balance is a toy ball. Which is a possible weight of the ball on the right?

• 10 g.

• 20 g.

• 30 g.

• 40 g.

Answer explanation

On a balance, the two objects have the same mass if it is level.

Since the mass pieces on the left total 30 g. in all and the toy ball on the right is lower than the mass pieces, it must have a greater mass than 30 g.

Both choice A and B are masses that are too light to balance the mass of the ball.

Tags

NGSS.MS-PS2-4

Look at the balance. On the left side are these mass pieces: 20 g. 20 g. 10 g. 5 g. 1 g. 1 g. On the right side is a toy car. What is the mass of the toy car?

Answer explanation

Because the balance is level, the car and the mass pieces have the same mass.

Add the total number of grams to find the mass of the car.

20 + 20 = 40 + 10 = 50 + 5 = 55 + 2 = 57

The toy car has a mass of 57 grams.

The best unit to measure the MASS of a paper clip is:

• meter

• liter

• gram

• kilogram

A tool for measuring the MASS of an object is called a

• thermometer

• gram

• balance

• fulcrum

Answer explanation

The balance is the TOOL.

The arm rests on the base and the point on which it pivots is called the FULCRUM.

We use gram pieces to balance an object. Grams are the UNITS used for measuring mass.