Write true if the statement is true or false if otherwise.
1. The Earth is a closed system.
2. Matter moves freely between the Earth and outer space.
3. The Earth system is isolated from the rest of the galaxy.
4. All processes of the Earth system are short term.
5. The Sun is the lone source of energy of the Earth.
6. Internal processes of the Earth depend on the Earth's internal heat.
7. Geological processes of the Earth vary in span of distance.
8. Radioactive decay underground contributes to Earth's internal heat.
9. The Earth has maintained its appearance ever since its formation.
10. There is leftover heat from the Earth's formation up to this day.
Answer (2)
The Earth is primarily a closed system for matter, but it is not isolated from its galactic environment. Various processes occur over differing timescales, influenced by both internal heat and external factors such as solar energy. While some of the Earth's heat is leftover from its formation, its appearance and geological processes continue to change with time.
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Let's go through each statement one by one:
The Earth is a closed system. True. A closed system means that energy may enter or leave, but matter does not. Earth is generally considered a closed system for matter because very little matter enters or leaves Earth's boundaries.
Matter moves freely between the Earth and outer space. False. Matter does not freely move between Earth and outer space. While some gases can escape into space, and meteorites can enter Earth's atmosphere, these occurrences are relatively rare compared to the total mass of the Earth, keeping Earth effectively closed for matter.
The Earth system is isolated from the rest of the galaxy. False. Earth is not isolated. It receives energy from the Sun and is affected by gravitational interactions with the Moon and other celestial bodies.
All processes of the Earth system are short term. False. Many geological processes, such as the formation of mountains or tectonic plate movement, occur over millions of years, while others, like weather changes, occur more rapidly.
The Sun is the lone source of energy of the Earth. False. Though the Sun is the main source of external energy for Earth's climate and weather, internal energy comes from the heat of the Earth's core due to radioactive decay and residual heat from its formation.
Internal processes of the Earth depend on the Earth's internal heat. True. Internal processes, such as volcanic activity and plate tectonics, are driven by the heat from the Earth’s core.
Geological processes of the Earth vary in span of distance. True. Geological processes can occur on various scales, from local earthquakes to tectonic movements spanning entire continents.
Radioactive decay underground contributes to Earth's internal heat. True. The decay of radioactive isotopes in Earth's interior is a significant source of heat that contributes to driving internal processes.
The Earth has maintained its appearance ever since its formation. False. Earth has undergone significant changes in appearance and structure through processes like erosion, plate tectonics, and biological evolution.
There is leftover heat from the Earth's formation up to this day. True. Some of the heat inside Earth is primordial, meaning it comes from the time of Earth's formation, and it still contributes to internal heat today.
