Module 4

You will have read about Shoichi Sakamoto, a Japanese inventor, who designed a very different house capable of withstanding damage due to an earthquake. His idea was to lift the house off its foundations the moment an earthquake struck so that it floated on a cushion of air 3 cm thick. He demonstrated this using a model. The diagram below shows how the house would be levitated. Experts in safety of buildings during earthquakes considered the idea but found some problems and several reasons why levitating a house during an earthquake would not work. Do you think levitation would work to protect a building during an earthquake? Here are five reasons why it might not work. Select all reasons you agree with.

• Lifting a house 3 cm above the foundations would only protect a house if the seismic waves were less than 3 cm in amplitude.

• The house might be empty so on one could push the button to make the compressor work.

• The first earthquake tremors might be the strongest and most destructive.

• The bag might overinflate and the house would levitate too much.

• If it was very windy, the house might slide off the foundation completely.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-1

Which statement describes what will happen to the magnets in the image?

• The magnets will repel each other.

• The magnets will attract each other.

• The magnets will pull each other.

• The magnets will have no effect on each other.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following best describes what is happening to these magnets?

• The opposite poles of the magnets are causing them to attract each other.

• The like poles of the magnets are causing them to attract each other.

• The opposite poles of the magnets are causing them to repel each other.

• The like poles of the magnets are causing them to repel each other.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which of the following is a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy

What is the acceleration due to gravity on Earth?

• 9.8 m/s^2

• 8.9 m/s^2

• 10.5 m/s^2

• 7.8 m/s^2

Which organelle is known as the powerhouse of the cell?

• Nucleus

• Mitochondria

• Ribosome

• Endoplasmic Reticulum

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NGSS.MS-LS1-2

What is the process by which plants make their food using sunlight?

• Respiration

• Photosynthesis

• Digestion

• Transpiration

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NGSS.MS-LS1-6

What is the boiling point of water at standard atmospheric pressure?

• 100°C

• 90°C

• 80°C

• 110°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which gas is most abundant in the Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen