Explanation

The change in seasons is caused by the inclination of Earth's axis (about 23.5°) and its orbit around the Sun.

As Earth orbits the Sun, different parts of the planet receive varying amounts of sunlight.

This leading to changes in temperature and weather patterns, resulting in seasons.

Explanation

• The Equator is an imaginary line that runs east-west around the middle of the Earth, dividing it into the Northern Hemisphere and the Southern Hemisphere.
• It is located at 0° latitude (0° N or 0° S).

Explanation

Echoes are produced when sound waves bounce back after hitting a surface, which is due to the reflection of sound.

This reflected sound is heard as an echo.

Explanation

Sound travels 4.3 times faster in water than in air.

In water, the particles are much closer together and they can quickly transmit vibration energy and the sound wave travels over four times faster than it would in air.

Explanation

Philosophy is the study of fundamental nature of knowledge, reality, and existence.

It encompasses various branches such as metaphysics, ethics, logic, and epistemology.

It focusing on the analysis and interpretation of concepts, arguments, and ideas.

Explanation

The depletion of the Earth's ozone layer allows more harmful ultraviolet (UV) radiation from the sun to reach the Earth's surface, leading to:

• Increased risk of skin cancer and cataracts in humans
• Damage to crops and marine life
• Disruption of ecosystems

Explanation

Sunlight is composed of a spectrum of light that includes seven colors, which are:

1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet

Explanation

Medulla oblongata is a part of your brainstem,

that connects your brain to your spinal cord.

It also manages many of the most important functions of your body.

It is a cone-shaped neuronal mass responsible for autonomic functions ranging from vomiting to sneezing

Explanation

Chlorofluorocarbon gas is the most harmful to the ozone layer.

The stratospheric ozone layer is Earth's “sunscreen”  protecting living things from too much ultraviolet radiation from the sun.

Oxygen layer in the atmosphere

Ozone protects us from the harmful ultraviolet radiation of the sun.

Ozone formula: O3

The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.

The ozone layer is depleting: Air pollution

Explanation

• Sir Isaac Newton postulated the law of universal gravitation.
• Newton's law of gravitation states that every point mass attracts every other point mass by a force acting along the line intersecting both points.

The formula to calculate this force is:

F = G * (m1 * m2) / r^2

Where:

• F is the force of gravity
• G is the gravitational constant
• m1 and m2 are the masses of the two objects
• r is the distance between the centers of the two objects