Physics Toolkit Review

What is "mass"

• How big an object is

• How much stuff an object is made from

• How hot an object is

• How heavy an object is compared to its size

What is "volume"

• How big an object is

• How much stuff an object is made from

• How hot an object is

• How heavy an object is compared to its size

An object has a mass of 100 kg when the object is on Earth.

If we move the object to the Moon, what happens to the mass of the object?

• The mass will decrease because the moon has weaker gravity than Earth.

• The mass will decrease because the Moon is far away from Earth.

• The mass will increase because the Moon has weaker gravity than Earth.

• The mass will stay the same, because mass is not affected by gravity.

Which statement below best describes the concept of Density?

• One liter of water is more dense than one liter of air because it has a larger mass in the same volume.

• The sun is less dense than Jupiter because it has a larger volume.

• A big-rig truck is more dense than a car because it has a larger mass and a larger volume.

• An airplane must be less dense than air because it floats in the sky.

If an object is described as being positively buoyant, what do we know about that object?

• It has a large mass

• It has a large volume

• It will float

• It has a high temperature

Which unit would be best to measure the mass of an elephant?

• Liters (L)

• Milliliters (mL)

• Grams (g)

• Kilograms (kg)

Which unit would be best to measure the volume of an elephant?

• cubic centimeters (cm³)

• cubic meters (m³)

• grams (g)

• kilograms (kg)

Which is a reasonable estimate of the mass of a pencil?

• 8 grams

• 800 grams

• 8 kilograms

• 800 kilograms

Which is a reasonable estimate of the volume of a basketball?

• 7.5 milliliters (mL)

• 750 milliliters (mL)

• 7.5 liters (L)

• 750 liters (L)

What is a reasonable estimate for the mass of a giraffe?

• 10 grams

• 1000 grams

• 10 kilograms

• 1000 kilograms