2. When was the birth of the solar system? 3. T/F The planets are all made of the same stuff but the conditions they formec 4. Elements in the solar system are like the ingredients in a 5. Why are only rocky planets able to form close to the sun? 6. What planet lost it's atmosphere and became a barren wasteland? 7. What planet heated up tremendously over time? 8. There were once thousands of planets in our solar system. True or Fals 9. The process of small rocks smashing into each other and gaining mass 10. How wide must a rock be to have a chance to turn into a planet? 11. Each collision causes the rocks to heat up and melt and then __ make all the heavy materials sink to the middle. earth Mars Jupiter Saturn Uranus

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2. When was the birth of the solar system? 3. T/F The planets are all made of the same stuff but the conditions they formec 4. Elements in the solar system are like the ingredients in a 5. Why are only rocky planets able to form close to the sun? 6. What planet lost it's atmosphere and became a barren wasteland? 7. What planet heated up tremendously over time? 8. There were once thousands of planets in our solar system. True or Fals 9. The process of small rocks smashing into each other and gaining mass 10. How wide must a rock be to have a chance to turn into a planet? 11. Each collision causes the rocks to heat up and melt and then __ make all the heavy materials sink to the middle. earth Mars Jupiter Saturn Uranus

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# Brief Explanations:The questions cover various aspects of the solar system, including its formation, planetary characteristics, and processes involved in planet formation. # Answer:2. The birth of the solar system occurred about 4.6 billion years ago.3. T/F The planets are all made of the same stuff but the conditions they formed under are different.# Answer: True4. Elements in the solar system are like the ingredients in a recipe.# Answer: recipe5. Only rocky planets are able to form close to the sun because the high temperatures near the sun cause volatile compounds to evaporate, leaving only materials with high melting points to form solid planets.# Answer: High temperatures near the sun cause volatile compounds to evaporate, leaving only materials with high melting points to form solid planets.6. Mars lost its atmosphere and became a barren wasteland.# Answer: Mars7. Venus heated up tremendously over time.# Answer: Venus8. There were once thousands of planets in our solar system. True or False.# Answer: False9. The process of small rocks smashing into each other and gaining mass is called accretion.# Answer: accretion10. A rock must be at least 1 kilometer wide to have a chance to turn into a planet.# Answer: 1 kilometer11. Each collision causes the rocks to heat up and melt and then make all the heavy materials sink to the middle.# Answer: make all the heavy materials sink to the middle.JupiterSaturnUranus

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