.1.1 Study: The Big Bang Theory
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea #1: Light takes time to reach Earth, and the characteristics of light change as objects in
the universe are constantly expanding outward.
Main Idea #2: Scientific evidence theorizes that all of the matter and energy in the universe
compressed into a tiny, dense ball, and then exploded outward during the Big Bang.
2.1.2 Study: Galaxies
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: The universe came together into groups of stars, known as galaxies, through the force
of gravity.
2.1.3 Study: Star Life Cycles
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea #1: Stars are extremely dense masses that are so hot that nuclear fusion occurs within
them.
Main Idea #2: When fuel is burned from within a star, it disrupts stellar equilibrium. The total mass
of a star will help determine its life cycle.
Main Idea #3: Nebulae left over from a star’s death will collapse under their own gravity to form
another star.
2.2.1 Study: Planet Formation
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea #1: Gravity attracts matter together to create solar systems.
Main Idea #2: An object orbiting around another object will take an elliptical path.
2.2.2 Study: Comets and Asteroid Belts
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: Objects other than planets and moons orbit the sun.
2.3.1 Study: Here Comes the Sun
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: The sun provides Earth with a tremendous amount of energy, in the form of photons,
that it creates through nuclear fusion.
2.3.2 Study: The Inner Rocky Planets
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: The planets closest to the sun are called the terrestrial planets because they are made
of rock.
2.3.4 Study: The Gas Giants and Pluto
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: The planets formed farther from the sun than Mars are very large, with a lot of gravity
and atmospheres primarily composed of hydrogen, helium, and ice.
2.4.1 Study: The Moving Earth
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea #1: The model of how our solar system moves has changed with the advancements of
technology and evidence.
Main Idea #2: Earth is constantly moving through space within our solar system.
Main Idea #3: The seasons and day length we experience on Earth are caused by the tilt of Earth’s
axis of rotation.
2.4.3 Study: The Living Planet
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea: Specific characteristics make Earth habitable for life.
2.4.4 Study: The Moon
Earth Science Core (S2157608)
Study Sheet
Name: ____________________
Date: ____________
Use the spaces below to take notes on the key concepts presented in this study.
Main Idea #1: The moon orbits Earth.
Main Idea #2: The sun, moon, and Earth block one another as they orbit.
Main Idea #3: The moon can exert a gravitational pull on Earth.