Unit 1 Origins of Earth Review Game

Front

What are the inner planets made of?

Back

The inner planets (Mercury, Venus, Earth, and Mars) are primarily made of rock and metal.

Front

What is the correct sequence of events in the Solar Nebula Hypothesis?

Back

Spinning cloud of dust and gas (solar nebula) → Protostar ignites into the sun → Planetesimals form → Planets accrete to what we know today.

Front

Which planets have lower densities due to their gas composition?

Back

Jupiter, Saturn, Uranus, and Neptune have lower densities because they are gas giants.

Front

What is the hottest, most dense, and most pressurized layer of Earth?

Back

The Inner Core is the hottest, most dense, and under the most pressure.

Front

What is the theory that describes the formation of the Universe from a single explosion?

Back

The Big Bang Theory describes the formation of the Universe from a single explosion, with galaxies expanding over time.

Front

What are the main components of the Earth's crust?

Back

The Earth's crust is primarily composed of silicate rocks and minerals.

Front

What is the difference between terrestrial and gas giant planets?

Back

Terrestrial planets are rocky and solid (Mercury, Venus, Earth, Mars), while gas giants are composed mostly of gases (Jupiter, Saturn, Uranus, Neptune).

Front

What is accretion in the context of planet formation?

Back

Accretion is the process by which particles and small bodies collide and stick together to form larger bodies, such as planets.

Front

What is a protostar?

Back

A protostar is a young star that is still in the process of forming, surrounded by a disk of gas and dust.

Front

What role does gravity play in the formation of planets?

Back

Gravity pulls together gas and dust in the solar nebula, leading to the formation of protostars and eventually planets.