Science 7 Year End Review - Unit C

Science 7 Year End Review - Unit C

Multiple Choice

Which statement most accurately describes what people originally believed about heat (in the 1600s)?

• A combination of fire and air.

• A combination of fire and gas.

• A combination of water and fire.

• None of the above.

Multiple Choice

How did people heat their food in the year 600 B.C. (about 2600 years ago)?

• Stoves

• Forced Air

• Fire

• Using the Sun.

Multiple Select

Select ALL boxes which represent NEEDS that are met using heat:

• Shelter

• Hair styling

• Cooking food

• Driving a car

• Ironing clothes

Multiple Choice

Which method of heat transfer is being represented by this image?

• Conduction

• Convection

• Radiation

• None of the above

Multiple Choice

If a student is attempting to build a thermos, which material would you most likely expect them to use?

• Cotton, because it is an insulator.

• Cotton, because it is a conductor.

• Aluminum foil, because it is an insulator.

• Aluminum foil, because it is a conductor.

Multiple Choice

Which of the following images represents the particles in steam?

• None of the above.

Multiple Choice

Which of the following describes the solidification of water into ice?

• The particles begin to shrink until they are in one place.

• The particles begin to slow until they are just vibrating next to each other.

• The particles speed up until they are spaced very far apart.

• The particles enlarge until they no longer have to move around to occupy space.

Multiple Choice

Which of the following statements is true (assuming the kettle and cup contain the same liquid)?

• The kettle has a higher temperature than the cup but the same amount of kinetic energy.

• The cup has a higher temperature than the kettle but the same amount of kinetic energy.

• The kettle has a higher kinetic energy than the cup but the same temperature.

• The cup has a higher kinetic energy than the kettle but the same temperature.

Multiple Choice

Ms. Thomas was very hungry, and took a bowl of soup, leaving Mrs. Hill with only a cup for herself. Which of the following statements would be true about the thermal energy of their soup?

• Mrs. Hill’s cup of soup would have the same amount of thermal energy as Ms. Thomas’ bowl of soup.

• Mrs. Hill’s cup of soup would have less thermal energy than Ms. Thomas’ bowl of soup.

• Mrs. Hill’s cup of soup would have more thermal energy than Ms. Thomas’ bowl of soup.

• The thermal energy of the soup cannot be determined because we do not know the temperature of the soup.

Multiple Choice

During the summer, Ms. Tabachniuk poured a brand new cement driveway. In the spring, she noticed several large cracks in the cement. What is the cause of the cracks?

• As the cement cooled in the winter, it contracted, causing stress fractures to occur.

• As the cement cooled in the winter, it expanded, causing stress fractures to occur.

• The cement was faulty.

• None of the above

Multiple Choice

In Iceland, many people heat their homes using geysers, which are natural sources of heat within the Earth. This is an example of what sort of naturally occuring form of thermal energy?

• Solar

• Geothermal

• Burning

• Rot/ Decay

Multiple Choice

You're sitting in your room with the blinds and curtains open, it's January, but your room feels warm. This would be because of...

• Passive solar heating

• Active solar heating

• Passive kinetic transfer

• Active kinetic transfer

Multiple Choice

Thermometers and thermostats work because:

• The heat creates extra particles to fill spaces and provide readings.

• The transfer of kinetic energy causes the particles to occupy more space.

• The kinetic energy transfers to the outside world.

• The kinetic energy makes metals bend to provide readings.

Multiple Choice

Refrigerants are effective at removing kinetic energy from the inside of the machine because they are:

• Lightweight

• Visible to refrigerator technicians

• Insulators

• Compressible

Multiple Choice

Because fossil fuels cannot be replenished at the same rate at which they are used, we refer to them as:

• Carbon offsets

• Unsustainable

• Sustainable

• Bitumen

Multiple Choice

Which of the following represents BOTH a financial and a societal cost?

• Using fossil fuels pollutes the environment.

• Using unsustainable materials damages habitats and taxes are then increased in order to fix those damages.

• The price of gasoline increases monthly based on availability.

• Solar panels are expensive to set up at first but pay for themselves in the first 5 years.