Biology
Chemistry
Physics
Geography
Cosmic Challenges
100

This is the basic unit of life.

What is a cell?

100

The chemical formula for water.

What is H₂O ?

100

This force pulls objects towards the center of the Earth.

What is gravity?

100

This layer of Earth contains molten rock and is responsible for plate tectonics.

What is the mantle?

100

This is the red planet in our solar system.

What is Mars?

200

This organ filters waste from the blood and produces urine.

What is the kidney?

200

This gas is the most abundant in Earth’s atmosphere.

What is nitrogen?

200

The unit of electric current.

What is the ampere?

200

The name of the supercontinent that existed around 300 million years ago.

What is Pangaea?

200

This celestial body is the third planet from the Sun.

What is Earth?

300

In the food chain, these organisms break down dead matter and recycle nutrients.

What are decomposers?

300

When an acid and a base react, they form this type of compound and water.

What is a salt?

300

This scientist developed the three laws of motion.

Who is Isaac Newton?

300

A scientist who studies earthquakes is called this.

What is a seismologist?

300

This is the largest planet in our solar system.

What is Jupiter?

400

This type of cell division produces two identical daughter cells.

What is mitosis?

400

In electrolysis of water, the gas collected at the anode is this.

What is oxygen?

400

If an object has a mass of 10 kg and is accelerating at 2 m/s², calculate the force acting on it.

What is 20 N? [F = ma]

400

This type of rock forms from cooling magma or lava.

What is igneous rock?

400

This galaxy is the closest spiral galaxy to the Milky Way.

What is the Andromeda Galaxy?

500

This type of cell division produces gametes with half the number of chromosomes as the parent cell.

What is meiosis?

500

This type of chemical reaction involves the exchange of ions between two compounds, often resulting in the formation of a precipitate.

What is a double displacement reaction?

500

This is the unit used to measure electrical resistance.  

What is the ohm?

500

This natural disaster is typically caused by an undersea earthquake or volcanic eruption, generating massive waves that can travel across oceans.

What is a tsunami?

500

This is the point in space where the gravitational pull is so strong that nothing, not even light, can escape.

What is a black hole?

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