Understanding Length, Mass, and Volume

What is the unit of length?

• Kilogram

• Meter

• Liter

• Second

Answer explanation

The meter is the standard unit of length in the International System of Units (SI). It is used to measure distance, while kilogram measures mass, liter measures volume, and second measures time.

Tags

CCSS.2.MD.A.2

Which is heavier?

• It depends on the objects being compared.

• A rock is always heavier than a feather.

• A car is lighter than a bicycle.

• Water is heavier than oil.

Answer explanation

The correct answer is 'It depends on the objects being compared' because weight varies based on the specific items. For example, a rock is heavier than a feather, but a car is not always lighter than a bicycle.

How many centimeters are in a meter?

• 100

• 1000

• 50

• 10

Answer explanation

A meter is a standard unit of length in the metric system, and it is equal to 100 centimeters. Therefore, the correct answer is 100.

Tags

CCSS.2.MD.A.2

What is the volume of a full glass of water?

• 500 milliliters

• 240 milliliters

• 150 milliliters

• 300 milliliters

Answer explanation

A full glass of water typically holds 240 milliliters, which is equivalent to 8 ounces. This is a common size for standard drinking glasses.

Tags

CCSS.3.MD.A.2

Which object is the lightest?

• Feather

• Brick

• Rock

• Lead

Answer explanation

The feather is the lightest object among the choices. It is designed for flight and is much less dense than a brick, rock, or lead, which are all significantly heavier materials.

Tags

CCSS.1.MD.A.1

How do we measure the weight of an object?

• Use a scale to measure the weight of an object.

• Weigh the object using a ruler.

• Estimate the weight by its size.

• Use a thermometer to measure the weight.

Answer explanation

The correct way to measure the weight of an object is to use a scale, which provides an accurate measurement. Other methods like using a ruler or thermometer do not measure weight.

Tags

CCSS.3.MD.A.2

a) With a ruler b) With a scale c) With a cup d) With a thermometer

• With a pencil

• With a protractor

• With a ruler and a scale

• a) With a ruler

Answer explanation

The correct choice is 'a) With a ruler' because a ruler is specifically designed for measuring lengths and drawing straight lines, making it the most suitable tool among the options provided.

Tags

CCSS.2.MD.A.3

What is the unit for measuring liquid?

• liters (L) or milliliters (mL)

• cubic centimeters (cm³)

• meters (m)

• grams (g)

Answer explanation

The correct units for measuring liquid are liters (L) and milliliters (mL). Cubic centimeters (cm³) can also measure liquid but are less common. Meters (m) measure length, and grams (g) measure mass, not liquid volume.

Tags

CCSS.4.MD.A.1

If you have 2 liters of juice, how many milliliters is that?

• 2000 milliliters

• 1500 milliliters

• 1000 milliliters

• 2500 milliliters

Answer explanation

2 liters is equal to 2000 milliliters because 1 liter is 1000 milliliters. Therefore, 2 liters x 1000 milliliters/liter = 2000 milliliters, making 2000 milliliters the correct answer.

Tags

CCSS.4.MD.A.1

Which is lighter?

• A feather is lighter than a rock.

• A car is lighter than a truck.

• Water is lighter than air.

• It depends on the objects being compared.

Answer explanation

A feather is indeed lighter than a rock, as feathers are made of lightweight materials, while rocks are dense and heavy. This makes the first choice the correct answer.

Tags

CCSS.3.MD.A.2