Exploring Outer Space
A Grade 12 science worksheet covering key concepts of outer space, including celestial bodies, phenomena, and exploration.
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Exploring Outer Space
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which of the following describes the current understanding of the origin of the universe?
Steady State Theory
Big Bang Theory
Oscillating Universe Theory
Pulsating Universe Theory
2. What is the primary factor determining a star's evolutionary path and eventual fate?
Its chemical composition
Its initial mass
Its distance from Earth
Its apparent brightness
3. A region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it is called a .
4. The is the galaxy that contains our Solar System.
5. Briefly explain the concept of cosmic microwave background radiation and its significance in cosmology.
6. All stars in the universe are born with the same initial mass.
True
False
7. Dark matter and dark energy are directly observable through telescopes.
True
False
8. Observe the diagram of our Solar System below. Identify and label at least four celestial bodies.
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