Explanation

Silicon (Si) is the element most commonly used to fabricate solar cells and transistors.

Silicon is a semiconductor material that is widely used in the production of electronic components, including:

• Solar cells (photovoltaic cells)
• Transistors
• Microprocessors
• Diodes

Explanation

Nuclear energy is a form of energy released from the nucleus, the core of atoms, made up of protons and neutrons.

This source of energy can be produced in two ways:

fission – when nuclei of atoms split into several parts – or fusion – when nuclei fuse together.

Explanation

Jupiter is the biggest planet

It is the largest planet in the Solar System according to size.

Saturn is the second largest planet in our solar system.

Mercury Planet has the smallest diameter

Moon One is not a planet

Venus planet has no moon

Saturn planet has the highest number of moons

Mars is sometimes called the Red Planet.

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These are the 8 planets

1. Mercury

2. Venus

3. Earth

4. Mars

5. Jupiter

6. Saturn

7. Uranus

8. Neptune

Explanation

J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays.

The proton was discovered by Ernest Rutherford.

The neutron was discovered by James Chadwick.

Explanation

The kidneys are part of the urinary tract that makes urine (pee).

Urine has salts, toxins, and water that need to be filtered out of the blood.

After the kidneys make urine, it leaves the body using the rest of the urinary tract as a pathway.

Explanation

Herpetology is the scientific study of reptiles and amphibians.

It includes the study of their biology, behavior, ecology, and conservation.

Explanation

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is produced when coal is burned without sufficient oxygen.

CO is highly toxic.

It can be deadly in high concentrations, as it displaces oxygen in the bloodstream.

Explanation

Chemical energy is stored in a dry cell.

A dry cell is a device that converts chemical energy into electrical energy.

Chemical energy is the energy stored in the bonds of atoms and molecules. 

Explanation

The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second.

A universal constant is known in equations as "c," or light speed.

The speed of light in air is 2.9 × 10⁸ m/s.

Explanation