Earth Science and Solar System Quiz

Which theory suggests that the solar system formed from a rotating cloud of gas and dust?

• Nebular Hypothesis

• Collision Theory

• Capture Theory

• Planetary Migration Theory

What is the primary composition of Earth's inner core?

• Molten rock

• Iron and nickel

• Silicate minerals

• Liquid magma

Which planet has the largest diameter relative to Earth?

• Mars

• Venus

• Jupiter

• Saturn

The boundary between Earth's crust and mantle is called the:

• Core-mantle boundary

• Mohorovičić discontinuity

• Lithosphere boundary

• Asthenosphere interface

Which hypothesis suggests that the Moon formed from debris after a Mars-sized object collided with Earth?

• Fission Theory

• Capture Theory

• Giant Impact Hypothesis

• Co-formation Theory

Earth's outer core is primarily composed of:

• Solid iron and nickel

• Liquid iron and nickel

• Molten silicates

• Solid basalt

What is the approximate thickness of Earth's crust under the continents?

• 5-10 km

• 30-50 km

• 100-150 km

• 200-250 km

Which planet is closest in size to Earth?

• Mars

• Mercury

• Venus

• Neptune

The region of partially melted rock in Earth's upper mantle is called the:

• Asthenosphere

• Lithosphere

• Mesosphere

• Thermosphere

According to the Nebular Hypothesis, what caused the initial cloud of gas and dust to collapse?

• Magnetic forces

• Gravitational forces

• Solar winds

• Electromagnetic radiation