Explanation

Ingenuity is a robotic helicopter that operates on Mars as part of NASA's Perseverance rover mission.

It is a small, autonomous helicopter that uses rotors to lift off the Martian surface and explore the planet from the air.

Ingenuity made history by becoming the first aircraft to fly on another planet in April 2021.

Explanation

A longitude is an imaginary line that runs vertically from the North Pole to the South Pole.

These lines, also called meridians, measure the distance east or west of the Prime Meridian.

Explanation

Mirage is an example of:

• refraction of light
• total internal reflection

Example

When the reflected light ray reaches our eyes, it appears as coming from the sky or tree.

This inverted image creates an optical illusion of the presence of water or the presence of islands etc.

Explanation

The position of the Earth when it is at the greatest distance from the sun is called the Aphelion.

The closest point to the Sun in a planet's orbit is called perihelion.

Explanation

The stratosphere is a layer of Earth's atmosphere.

Stratosphere is the second layer of the atmosphere as you go upward.

Explanation

As you move toward the center of the Earth, the gravitational force decreases because mass below you exerts less pull.

Therefore, the weight of a body decreases as gravity weakens.

Explanation

• The Milky Way galaxy is spiral in shape.
• It consisting of a central bar-shaped structure and a disk of stars, gas, and dust that spirals outward in a logarithmic spiral pattern.

Explanation

According to Newton's First Law of Motion, the mass of an object measures its inertia.

It is the resistance of an object to changes in its state of motion.

Explanation

The area under a velocity-time graph represents the total distance traveled by an object. This is because:

∫v(t)dt = distance

Where v(t) is the velocity as a function of time.

Explanation

Projectile motion is a type of two-dimensional motion where an object moves under the influence of gravity, with a constant acceleration of g (9.8 m/s²).

It involves a combination of horizontal motion with a constant velocity and vertical motion with a constant acceleration, resulting in a curved trajectory.