Science quiz

When gas burns, the chemical energy stored in the fuel bonds is released as thermal energy (heat). While light is also produced, the primary purpose and main energy transfer in a gas fire is the conversion to heat.

A habitat is the natural home or environment of an animal, plant, or other organism. A niche refers to the role an organism plays within that habitat.

Sedimentary rocks are formed by the accumulation of sediment, which often results in a grainy texture and the potential to contain fossils. Sandstone is a classic example of a sedimentary rock.

The Pascal (Pa) is the SI unit of pressure, defined as one Newton per square meter. Joules measure energy, Kilograms measure mass, and Newtons measure force.

Smoking is well-documented to cause lung cancer, bronchitis, and emphysema due to the inhalation of toxic chemicals. Brain damage is not a direct, primary consequence typically associated with smoking.

Chromatography is a laboratory technique used to separate mixtures of substances, such as dyes, based on their different solubilities and rates of movement through a stationary phase.

Non-luminous objects do not produce their own light. We see them because light from a luminous source hits the object and reflects into our eyes.

The general reaction between a metal and an acid is: Metal + Acid yields Salt + Hydrogen gas. This is a classic displacement reaction.

An asteroid is a small, rocky object that orbits the Sun. Comets are icy, and moons orbit planets rather than the Sun directly.

While the exact number can vary based on classification, the human body is generally cited as having approximately 200 distinct types of specialized cells.

This is a classic science pun. Atoms make up everything in the physical universe, so you cannot trust them because they make up everything (a play on the phrase 'to make up' meaning to fabricate).

The skin is the largest organ of the human body, covering the entire external surface.

Fossil fuels are formed from the remains of ancient organisms. Natural gas (often referred to as 'gas') is a fossil fuel, whereas wind, solar, and geothermal are renewable energy sources.

The Ohm is the standard SI unit of electrical resistance. Volts measure potential difference, and Joules measure energy.

Vertebrates are animals with a backbone, and they are categorized into five main groups: mammals, reptiles, amphibians, fish, and birds.

Isaac Newton originally identified seven colors in the spectrum: red, orange, yellow, green, blue, indigo, and violet. He included indigo to match the seven notes of a musical scale.

Gravity is the fundamental force of attraction between masses, which holds objects on the surface of the Earth. Weight is the measure of the force of gravity acting on an object.

On the pH scale, which ranges from 0 to 14, a value of 7 is considered neutral. Values below 7 are acidic, and values above 7 are alkaline.