Sophia - Environmental Science - Unit 1 Challenge 2.

Sophia - Environmental Science - Unit 1 Challenge 2. 1 — Earth's Formation: History of Earth's Formation Determine the date of major events for Earth's history, according to the one-year calendar model. According to the one-year calendar model based on the Big Bang theory, which of the following events happened in September? • a.) The solar system comes into existence. • b.) The Big Bang occurs. • c.) Life appears on Earth. • d.) Homo sapiens appear on Earth. 2 — Earth's Formation: Atmosphere Conditions Differentiate between the conditions in the atmosphere before and after life formed on Earth. Some early life forms developed photosynthesis, which released free oxygen. When oxygen is impacted by UV radiation, it forms __________. • a.) ozone • b.) water • c.) oxygen • d.) sulfur dioxide 3 — Early Life Identify challenges for plant and animal life adapting to land. Which of the following was a challenge for plants and animals when adapting to life on land? • a.) Moving around without water for transportation • b.) Receiving enough radiation to maintain temperature • c.) Experiencing too much ozone • d.) Absorbing carbon dioxide from the atmosphere 4 — Continental Drift and Major Extinctions: Tectonic Plates Recognize the relationship between tectonic plates and continents according to the theory of continental drift. Which of the following statements about the theory of tectonic plates and continental drift is NOT true? • a.) Continents are the surface parts of larger tectonic plates. • b.) Continental drift led to an increase in biodiversity. • c.) Tectonic plates float on the earth’s molten core.