Science 9 Unit D Review Slides

Science 9 Unit D Review Slides

Multiple Choice

The two balloons are brought near each other because

• the balloons have identical charges

• the balloons have opposite charges

• the balloon on the right has no charge

• the balloon on the left has a negative charge

Multiple Choice

The benefit to a dry cell is that

• it is light-weight

• it can be used in any position

• it is made up of liquid electrolytes

• they can recharge forever

Multiple Choice

An excellent insulator would be

• copper and aluminum

• tungsten

• gold

• plastic and rubber

Multiple Choice

A standard 120 V electrical outlet can handle a maximum of 15 A of current. If an appliance with a resistance of 12 Ohms is plugged in, how many amperes of current are available for another appliance?

• 3

• 5

• 10

• 12

Multiple Choice

The circuit on the left is a _______ circuit. The circuit on the right is a _______ circuit.

• series, parallel

• simple, series

• parallel, series

• parallel, simple

Multiple Choice

The energy conversions that take place from the time the plunger is pushed down to the time the explosives detonate are

• electrical to mechanical to chemical

• mechanical to electrical to chemical

• chemical to electrical to mechanical

• mechanical to chemical to electrical

Multiple Choice

What electrical concept is the term "watt" associated with?

• Power

• Current

• Voltage

• Resistance

Multiple Choice

A bulb is provided with 60 W of electrical power. How much energy does the 60 W bulb use in 1 minute?

• 6 J

• 60 J

• 360 J

• 3 600 J

Multiple Choice

What is the efficiency of an incandescent light bulb that releases 62 kJ of light energy from an input of 1 560 kJ of total energy?

• 25%

• 25

• 4

• 4%

Multiple Choice

Electrical power is generated using different sources of energy. Which of the following sources of energy produces the most pollution?

• Coal

• Wind

• Water

• Sunlight

Multiple Choice

Solar energy is an example of

• warm energy

• non-renewable energy

• renewable energy

• mechanical energy