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 used 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 amount of voltage in a circuit

• The amount of energy being transferred through a circuit

• The amount of current in a circuit

• The resistance in a circuit

Why is calculating electrical power important?

• To ensure devices are used safely

• To increase the speed of devices

• To reduce the cost of electricity

• To improve battery life

What is the definition of power in the context of electricity?

• The amount of voltage in a circuit

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

• The amount of current in a circuit

• The resistance in a circuit