Earth & Space Level 10 Pre-Test

What is the primary goal of space exploration?

• To find new planets to colonise

• To expand knowledge of the origins and structure of the universe

• To mine asteroids for resources

• To establish military bases in space

Which of the following is a challenge of humans travelling and living away from Earth’s surface?

• Lack of sunlight

• Microgravity effects on the human body

• Excessive oxygen levels

• Overpopulation in space

What is a galaxy?

• A large collection of stars, gas, and dust bound together by gravity

• A single star with its own solar system

• A black hole

• A planet with rings

Which of the following is NOT a feature of the universe?

• Galaxies

• Stars

• Solar systems

• Oceans

What is a black hole?

• A region of space where the gravitational pull is so strong that nothing, not even light, can escape

• A large asteroid

• A type of star

• A planet with no atmosphere

Which theory models the origin and evolution of the universe?

• The Steady State Theory

• The Big Bang Theory

• The Nebular Hypothesis

• The String Theory

What evidence supports the Big Bang Theory?

• The existence of black holes

• The discovery of new planets

• The cosmic microwave background radiation

• The presence of water on Mars

What is the cosmic microwave background radiation?

• Radiation from the Sun

• Heat from volcanic activity on Earth

• Thermal radiation left over from the Big Bang

• Light from distant stars

Which of the following best describes a solar system?

• A group of galaxies

• A star and all the objects that orbit it

• A collection of black holes

• A cluster of asteroids

What is the primary component of stars?

• Water

• Hydrogen

• Carbon

• Iron