Everyday Science MCQs

Coal, oil, and gas release stored carbon when burned.
The resulting carbon dioxide contributes to climate change.

Undersea earthquakes, landslides, or eruptions can displace large water volumes.
The resulting waves can grow near coastlines.

Calcium combines with phosphate in mineralized tissues.
It also supports muscle and nerve function.

Methane absorbs infrared radiation efficiently.
It is produced by anaerobic decomposition and livestock digestion.

Igneous rocks crystallize from magma or lava.
Granite and basalt are common examples.

Iron is part of the hemoglobin molecule.
Deficiency can reduce oxygen-carrying capacity.

These pollutants form sulfuric and nitric acids in air.
Acid deposition can harm lakes, soils, buildings, and forests.

Layers of sediment become compacted and cemented.
Sandstone and limestone are examples.

The thyroid incorporates iodine into its hormones.
Deficiency may cause goiter and impaired development.

Smog reduces visibility and can irritate the respiratory system.
Some smog forms through sunlight-driven chemical reactions.

The Moon's gravity creates tidal bulges in Earth's oceans.
The Sun modifies the tidal range according to alignment.

Immunity uses physical barriers, cells, and molecules to defend the body.
It includes innate and adaptive responses.