Science Quiz

What must be true for a ship to float?

• Its weight must be heavier than the water.

• Its weight must be lighter than the water.

• Its weight must be equal to the water.

• Its weight does not matter.

What is the formula to calculate mass?

• Mass = Volume + Density

• Mass = Volume / Density

• Mass = Volume × Density

• Mass = Density / Volume

What is the density of water at 25 °C as given in the example?

• 1000 kg/m³

• 997 kg/m³

• 950 kg/m³

• 900 kg/m³

What volume of water does the ship displace in the example?

• 5 m³

• 6 m³

• 7 m³

• 8 m³

What is a common mistake students make when calculating mass?

• Forgetting to multiply volume and density

• Not calculating the overall volume of each shape

• Using the wrong units

• Ignoring the temperature

What is electrical power used to confirm?

• The speed of a circuit

• The amount of energy being transferred

• The voltage of a circuit

• The resistance in a circuit

Why is it important to calculate electrical power correctly?

• To save money on electricity bills

• To prevent electrocution and ensure safety

• To increase the speed of devices

• To reduce the size of devices

What is the definition of power as given in the text?

• The amount of energy being stored

• The amount of energy being transferred in a period of time

• The amount of energy being lost

• The amount of energy being created