- 1. Will humans someday live and work on Mars? Many scientists think so. In fact, they are already working on plans to turn Mars into a new Earth. Humans need three basic things to live: water to drink, air to breathe, and food to eat. Because of the lack of these necessities, it isn’t possible to live on Mars right now. For one thing, there is not enough oxygen. There is also no liquid water—just some ice. So how can we make Mars habitable? The answer, say scientists, is a process called terraforming. - What three basic things do humans need to live on Mars?
A) Water to grow plants, air to breathe, and food to eat
B) Water to drink, air to breathe, and food to feed animals
C) Water to drink, air to pollute, and food to eat
D) Water to drink, air to breathe, and food to eat
- 2. Will humans someday live and work on Mars? Many scientists think so. In fact, they are already working on plans to turn Mars into a new Earth. Humans need three basic things to live: water to drink, air to breathe, and food to eat. Because of the lack of these necessities, it isn’t possible to live on Mars right now. For one thing, there is not enough oxygen. There is also no liquid water—just some ice. So how can we make Mars habitable? The answer, say scientists, is a process called terraforming. - Why is not possible to live right now on Mars?
A) For one thing, there is not enough plants. There is also no liquid water-just some ice
B) For one thing, there is not enough space for humans. There is also no liquid water-just some ice
C) For one thing, there is not enough oxygen. There is also no liquid water-just some ice
D) For one thing, there is not enough food. There is also no liquid water-just some ice
- 3. Terraforming means changing the environment of a planet so that it is similar to Earth’s. On Mars, the average temperature is about minus 60 degrees Celsius. So one of the main goals of terraforming Mars is to warm it up. One idea for warming Mars comes from a problem here on Earth—climate change. Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere. We might create similar conditions on Mars by building factories that release greenhouse gases. The gases will change the atmosphere on Mars. Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air. - What is “Terraforming”?
A) Terraforming means changing the time of a planet so that it is similar to Earth´s
B) Terraforming means changing the air of a planet so that it is similar to Earth´s
C) Terraforming means changing the environment of a planet so that it is similar to Earth´s
D) Terraforming means changing the food of a planet so that it is similar to Earth´s
- 4. Terraforming means changing the environment of a planet so that it is similar to Earth’s. On Mars, the average temperature is about minus 60 degrees Celsius. So one of the main goals of terraforming Mars is to warm it up. One idea for warming Mars comes from a problem here on Earth—climate change. Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere. We might create similar conditions on Mars by building factories that release greenhouse gases. The gases will change the atmosphere on Mars. Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air. - What is the average temperature on Mars?
A) On Mars, the average temperature is about minus 30 degrees
B) On Mars, the average temperature is about minus 40 degrees
C) On Mars, the average temperature is about minus 50 degrees
D) On Mars, the average temperature is about minus 60 degrees
- 5. Terraforming means changing the environment of a planet so that it is similar to Earth’s. On Mars, the average temperature is about minus 60 degrees Celsius. So one of the main goals of terraforming Mars is to warm it up. One idea for warming Mars comes from a problem here on Earth—climate change. Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere. We might create similar conditions on Mars by building factories that release greenhouse gases. The gases will change the atmosphere on Mars. Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air. - Why is Earth temperature getting warmer?
A) Most scientists agree that Earth is becoming warmer due to increased levels of factory gases in our atmosphere
B) Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere
C) Most scientists agree that Earth is becoming warmer due to increased levels of car gases in our atmosphere
D) Most scientists agree that Earth is becoming warmer due to increased levels of poisonous gases in our atmosphere
- 6. Terraforming means changing the environment of a planet so that it is similar to Earth’s. On Mars, the average temperature is about minus 60 degrees Celsius. So one of the main goals of terraforming Mars is to warm it up. One idea for warming Mars comes from a problem here on Earth—climate change. Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere. We might create similar conditions on Mars by building factories that release greenhouse gases. The gases will change the atmosphere on Mars. Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air. - How scientist will cool down Mars?
A) We might create similar conditions on Mars by building cars that release greenhouse gases
B) We might create similar conditions on Mars by building machines that release greenhouse gases
C) We might create similar conditions on Mars by building houses that release greenhouse gases
D) We might create similar conditions on Mars by building factories that release greenhouse gases
- 7. Terraforming means changing the environment of a planet so that it is similar to Earth’s. On Mars, the average temperature is about minus 60 degrees Celsius. So one of the main goals of terraforming Mars is to warm it up. One idea for warming Mars comes from a problem here on Earth—climate change. Most scientists agree that Earth is becoming warmer due to increased levels of greenhouse gases in our atmosphere. We might create similar conditions on Mars by building factories that release greenhouse gases. The gases will change the atmosphere on Mars. Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air. - What benefits would bring growing plants on Mars?
A) Rain will fall, and it may be possible to grow plants for food. The plants will add more clouds to the air
B) Rain will fall, and it may be possible to grow plants for food. The plants will add more oxygen to the air
C) Rain will fall, and it may be possible to grow plants for food. The plants will add more pollution to the air
D) Rain will fall, and it may be possible to grow plants for food. The plants will add more carbon dioxide to the air
- 8. There will be many difficulties in terraforming Mars. The project could take many centuries, and the cost will be high. We have some of the technology, such as the ability to create greenhouse gases, but not the money. However, life on Mars is a real possibility for future generations. - How long does the project take?
A) The project could take many hours
B) The project could take many days
C) The project could take many years
D) The project could take many centuries
- 9. First Visits - Terraforming Mars will probably be a thousand year project, starting with several survey missions. The flight to Mars will take six months, and each mission might last 18 months. Homes on Mars - Each new mission will build more habitation modules—places to live. These will allow future visitors to spend more time on Mars and learn more about living on the planet. Global Warming - To warm up the planet and to make water flow and create an atmosphere, we will need to increase the carbon dioxide level on Mars. Greenhouse gases will melt the ice in Mars’s Polar Regions. When the ice becomes water, the water will release the carbon dioxide that was trapped inside the ice. - What do we need to warm up and to make water flow in Mars?
A) We will need to increase the water level on Mars
B) We will need to increase the carbon dioxide level on Mars
C) We will need to increase the oxygen level on Mars
D) We will need to increase the sea level on Mars
- 10. Life under Domes - Enormous domes will provide climate controlled living spaces, first for plants and later for humans. It will take centuries to improve the rocky surface so that people can grow plants. Powering the Planet - Nuclear power and wind turbines are two current technologies that we might be able to use on Mars for power. Don’t Forget Your Mask - Even 1,000 years from now, there may still not be enough oxygen for humans to breathe. People on Mars may still need to use equipment similar to scuba gear. - What technologies do we need to use power on Mars?
A) Nuclear bombs and wind turbines
B) Nuclear power and wind kites
C) Nuclear power and mechanical turbines
D) Nuclear power and wind turbines
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