3NA Mass Weight Density Pre-test

If a piece of matter changes shape, what happens to its mass?

• It increases
• It decreases
• it changes randomly
• it stays the same

Which of the following is a unit of mass?

• kilogram
• liter
• meter
• pound

One piece of matter is cut into two pieces.  What would be the mass of the two new pieces if we combined them?

• the two pieces would have the same mass as the original piece
• the two pieces would have more mass than the original piece
• the two pieces would have less mass than the original piece
• there is no way to tell which would have more mass

Suppose an astronaut were to visit a planet where the gravity is half that of Earth.  His MASS on that planet would be ______________.

• half his Earth mass
• the same as his Earth mass
• twice his Earth mass
• zero

If an object has more mass, then it will

• weigh more.
• weigh less.
• weigh the same as an object with less mass.
• always have more volume than an object with less mass.

Why would you weigh less on the moon compared to Earth?

• less air
• less sunlight
• more gravitational pull
• less gravitational pull

What is the formula for mass and weight?

• w = m/g

• w = m - g

• w = mg

• w = m + g

What is the formula for density?

• density = mass / volume

• density = volume / mass

• density = mass x volume

• density = mass + volume

What is the SI Unit for Density?

• g / cm³

• g / m³

• kg / m²

• kg / m³

What do substances less dense than water do?

• Sink in water

• Float on water

• Dissolve in water

• Freeze in water