Biology
Chemistry
Physics
Astronomy
Mixed
200

How many bones are in an adult human skeleton?

206 bones

200

what is the element of gold

Au

200

What do we call the push or pull on an object?

Force

200

What type of icy body is Halley's?

Comet

200

Which organelle is known as the "powerhouse of the cell" because it generates most of the cell's chemical energy?

Mitochondria

400

What is the largest organ of the human body?

The Skin

400

What is the long form of (DNA)

Deoxyribonucleic acid

400

What is the SI unit of force?

Newton(N)

400

Which object have the most gravitational force?

Blackhole

400

What pigment drives photosynthesis in green plants?

Chlorophyll

600

What connects bone to another bone?

Ligaments

600

What is the long form of (RNA)

Ribonucleic Acid

600

What is the rate of change of velocity?

Acceleration

600

What star is also called the North Star?

Polaris

600

What is the final, cool stellar remnant of a low-mass star like our Sun?

Dwarf

800

What is the smallest bone in the human body?

stapes

800

Which element has the highest percentage by mass in the human body (about 65%)?

Oxygen

800

What fundamental charge property confines quarks inside hadrons?

Color

800

What hot outer layer of the Sun becomes visible during a total solar eclipse?

Corona

800

What force keeps planets in their respective orbits?

Gravity

1000

Which pard of human body have the most bones?

Hands

1000

A student dissolves 7.5 g of potassium chloride  in 150 cm³ of water to make a solution.

  1. Calculate the concentration of this solution in g/dm³.
  2. What mass of  is required to prepare 250 cm³ of a new solution that has the exact same concentration?


12.5g

1000

What absolute cosmic speed limit governs the maximum rate of information transfer?

light

1000

What do astronomers call the dramatic brightening of a star system due to sudden surface fusion?

Nova

1000

What parameter determines whether the universe is open, closed, or flat?

Omega