1. Life in Space Review Quiz

2. Using the diagram – Which planet is in the diagram should be the hottest? Planet APlanet BPlanet CPlanet D

3. Which of the following is a result of the existence of Earth’s atmosphere, which supports the existence of life? Blue skiesA heated coreThe Aurora BorealisLivable surface temperatures

4. How does the ozone layer of Earth protect life? By attracting solar energyBy deflecting solar windsBy absorbing ultraviolet radiation (UV rays)By maintaining a constant temperature

5. Animals need oxygen and plants need carbon dioxide, but what do all living things on Earth also need? WaterGravityChanging seasonsA period of day and night

6. Why is Pluto not suitable for human habitation? Pluto is no longer considered a planet.Pluto is too far from the Sun.Pluto is covered with frozen nitrogen.Pluto does not orbit the Sun.

7. A scientist is looking for a planet that could sustain life in other planetary systems. The scientist studied the amount of heat radiating from the system’s star. What other factor might the scientist study? The number of planets in the systemHow long each planet takes to rotateThe length of the orbits of the planetsThe presence of an atmospheric ozone layer

8. Look at the planetary system diagram provided. Earth is about 149 million kilometers from the Sun. If the star in the planetary system diagram here is the same size and age of the Sun, which planet would have the best chance of sustaining life? Planet APlanet BPlanet CPlanet D

9. What holds the atmosphere around the Earth? The Sun’s lightThe force of gravitySpaceNothing

10. The presence of water has been found on other planets. TRUEFALSE

11. The Sun provides Earth with vast amounts of energy everyday. TRUEFALSE