[SC F2] 12.1 (D) Hypothetical Situation in the Solar System

Why is the Earth the most suitable planet for living things?

• Has low oxygen content.

• Has low mineral content.

• Has low water content.

• Has a suitable temperature range.

Which of the following is true about the Earth?

(Choose two answers.)

• The temperature is too hot.

• Its atmosphere blocks ultraviolet rays.

• High oxygen content.

• Extremely low gravity.

Which of the following can increase the ecological footprint?

• Banning deforestation.

• Use alternative energy more widely.

• Each person uses his / her own car to go to work.

• Recycle materials made up of plastics, glass, metal and paper.

Which of the following will happen if the Earth stops spinning?

(Choose two answers.)

• The times for low and high tides will change.

• The mass of the Earth will change.

• The density of the Earth will decrease.

• There will be more desert areas.

What are the characteristics of Earth that make it the most suitable planet for living things?

(Choose more than one answers.)

• Contains large quantities of water.

• Receives sunlight for the photosynthesis process.

• Has a high content of oxygen for the respiration process.

• Has gravity that keeps objects from floating.

What is the importance of ecological footprint?

• Enables us to plan our daily activities.

• Enables us to know how much of the resources are used.

• Enables us to prevent sound pollution.

• Enables us to measure the population of human.

The following is the effect if the rotation of the Earth slows down or stops completely, except

• some part of Earth will be hit by tsunami.

• the Earth will experience longer day and night.

• the Earth will experience extreme weather.

• gravitational pull of the Earth no longer exist.

Which of the following statement about the moon is true? (Choose more than one answer.)

• The Moon is four times bigger than the Earth.

• The duration taken for the Moon to rotate on its axis and orbit the Earth is about the same.

• The moon is one of the many natural satellite of the Earth.

• The same surface of the Moon would be facing the Earth at all times.