Podcast
Questions and Answers
Which factor is primarily responsible for the seasonal variations in sunlight and temperature on Earth?
Which factor is primarily responsible for the seasonal variations in sunlight and temperature on Earth?
- The Earth's distance from the sun.
- The speed of Earth's rotation.
- The Earth's axial tilt. (correct)
- The shape of Earth's orbit.
What is the approximate duration of one complete cycle of axial precession?
What is the approximate duration of one complete cycle of axial precession?
- 365 days
- 24 hours
- 26,000 years (correct)
- 2,600 years
Which of the following best describes the cause of earthquakes?
Which of the following best describes the cause of earthquakes?
- Volcanic eruptions releasing seismic waves.
- Tectonic plates moving along fault lines. (correct)
- Oceanic currents shifting suddenly.
- Atmospheric pressure changes.
What is the primary tool used by scientists to measure the intensity and location of earthquakes?
What is the primary tool used by scientists to measure the intensity and location of earthquakes?
What is the main factor that leads to volcanic eruptions?
What is the main factor that leads to volcanic eruptions?
How does the orientation of the Earth's axis affect seasons in the Philippines?
How does the orientation of the Earth's axis affect seasons in the Philippines?
What term describes the long-term climate cycles affected by factors such as axial precession?
What term describes the long-term climate cycles affected by factors such as axial precession?
Which of the following sequences accurately describes the energy transfer during an earthquake?
Which of the following sequences accurately describes the energy transfer during an earthquake?
What role does magma buoyancy play in volcanic eruptions?
What role does magma buoyancy play in volcanic eruptions?
Which of the following natural disasters can be triggered by earthquakes?
Which of the following natural disasters can be triggered by earthquakes?
Flashcards
Earth's Rotation
Earth's Rotation
The spinning of Earth on its axis, resulting in day and night.
Earth's Revolution
Earth's Revolution
Earth's orbit around the Sun, which determines the seasons.
Earth's Axial Tilt
Earth's Axial Tilt
The tilt of Earth's axis at 23.45 degrees, causing variations in sunlight and temperature, leading to seasons.
Earthquake
Earthquake
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Seismic Waves
Seismic Waves
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Volcanic Eruption
Volcanic Eruption
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Study Notes
- Earth rotates on its axis, causing day and night.
- Earth's revolution around the Sun is responsible for the seasons.
Seasons in the Philippines
- The Philippines experiences wet and dry seasons.
- Each season is associated with specific appropriate activities.
Tilt of the Earth's Axis
- Earth's axis is an imaginary line running through the North and South Poles.
- The Earth rotates around its axis every 24 hours.
- The Earth's axis is tilted at an angle of 23.45 degrees.
- The tilt causes variations in sunlight and temperature.
- Variations in sunlight and temperature lead to seasons.
- Axial precession is a slow wobble of Earth's axis.
- Axial precession completes a full cycle every 26,000 years.
- Axial precession is part of the Milankovitch cycles.
- Milankovitch cycles are long-term climate cycles.
- Milankovitch cycles affect the Earth's climate over extended periods.
Earthquake
- Earthquakes are sudden shakings of the Earth's surface.
- Earthquakes are caused by tectonic plates moving along fault lines.
- The movement of tectonic plates releases stored energy.
- Energy is released in the form of seismic waves.
- Seismic waves travel through the Earth.
- Seismic waves cause ground shaking.
- Ground shaking causes damage to buildings and infrastructure.
- Earthquakes can trigger landslides, tsunamis, and other natural disasters.
- Scientists use seismographs to measure earthquake intensity and location.
- The Richter scale measures the energy released by an earthquake.
Volcanic Eruptions
- Volcanic eruptions occur when magma and gases create pressure that exceeds the strength of surrounding rock.
- Magma buoyancy contributes to volcanic eruptions.
- Pressure from magma and gases contribute to volcanic eruptions.
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