PHYSICS
BIOLOGY
CHEMISTRY
ASTRONOMY
RANDOM
100

What does SI stand for?

International System of Units

100

What is the natural compound present in green plants that gives them their colour?

Chlorophyll


100

Why is lead used in pencils even though lead is poisonous?

The core of a pencil does not contain lead and never has. Pencils contain a form of solid carbon known as graphite.

100

What is the only planet not named after a God?

Earth.

100

List examples of good insulators.

plastic, paper, wood, rubber
200

What is Newton's third law?

for every action, there is an equal and opposite reaction

200

Name the Nucleotides.

adenine, cytosine, guanine, thymine

200

copper and tin mix to create which alloy?

Bronze

200

What is a black hole?






A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out


200

Which is the most abundant element in the universe?

Hydrogen.

300

What is Torque?

Torque is a measure of the force that can cause an object to rotate about an axis.

300

Which part of the body makes platelets?

The bone marrow

300

which gas is mainly responsible for acid rain

Sulfur Dioxide

300

Which is the hottest planet in the solar system?

Venus, with a surface temperature of 460 °C.

300

What is the most common blood group in the UK?

Blood Group O

400

Newton's Second Law






Newton's second law of motion states that F = ma, or net force is equal to mass times acceleration. A larger net force acting on an object causes a larger acceleration, and objects with larger mass require more force to accelerate.


400

The 4 heart valves

aortic valve, mitral valve, pulmonary valve and tricuspid valve.

400

What is Solubility?

Maximum amount of the substance which can be dissolved in a solvent at a given temperature. It is the concentration of a saturated solution at a certain temperature.

400

What is the most common type of star found in the Milky Way?

Red Dwarf stars.

400

Which protein helps form hair, nails and your skin’s outer layer?

Keratin

500

KE formula

K = ½mv2

500

What are synapses

The places where neurons connect and communicate with each otherare called synapses. Each neuron has anywhere between a few to hundreds of thousands of synaptic connections, and these connections can be with itself, neighboring neurons, or neurons in other regions of the brain

500

what are Dipole-dipole Forces?

Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

500

What is the minimum speed of a meteoroid when it enters Earth’s atmosphere?

25,000 miles per hour.

500

What is the scientific term for the study of mushrooms?

Mycology