Science 1

Question 1

gun powder is made up of:

Answer 1

(sulphur 10%, charcoal 15%, potassium nitrate 75%)

Question 2

Aspirin comes from….

Answer 2

comes from willow bark.

Question 3

Modern napalm is a mix of ___

Answer 3

is a mix of benzene and polystyrene

Question 4

Line on boats

Answer 4

plimsoll line

On boats you have the plimsoll line showing whether it’s overloaded.

Question 5

Two processes you go through to get metal blade hard but not brittle

Answer 5

quenching makes it harder/brittle, tempering makes it less so

Question 6

Benfords law is a mathematical law which says

Answer 6

in many types of random data the number 1 appears 30% of the time.

Question 7

Amalgam = in chemistry it’s an alloy of ___ with another metal

Answer 7

Mercury

Especially one used for dental fillings

Question 8

Brass =

Answer 8

copper and zinc

Question 9

Bronze =

Answer 9

copper and tin

Question 10

Rubies and Emeralds owe their colour to

Answer 10

chromium oxide

Question 11

Stainless steel

Answer 11

Chromium + iron

Question 12

Green copper is called…

Answer 12

verdigris, copper carbonate

Question 13

Silver ore, aka ….

Answer 13

Acanthite

Question 14

__ is the best conductor

Answer 14

Silver

Question 15

To go from celcius to farenheit -

Answer 15

double and add 30

Question 16

A beautiful stone which the Romans believed captured rays of the moon

Answer 16

Moonstone

Question 17

The drug qat turns people’s faces ___

Answer 17

Green

Question 18

Amorphous clayey rock that is the chief commercial ore of aluminium

Answer 18

Bauxite

Question 19

Solar flares are dangerous for example the Carrington Event of ___

Answer 19

Solar flares like Carrington Event of 1859 that took out telegraph wires.

Telegraph systems all over Europe and North America failed, in some cases giving telegraph operators electric shocks. Telegraph pylons threw sparks. Some telegraph operators could continue to send and receive messages despite having disconnected their power supplies.

Question 20

Chemical that causes sleep pressure

Answer 20

Adenezine

Question 21

A million seconds is less than twelve days; a billion is

Answer 21

almost thirty-two years.

Question 22

The most frequent 100 words account for ___ of all conversations

Answer 22

60% of all conversations.

Question 23

___ main constituent is a solution of ~3-6% sodium hypochlorite (NaOCl)

Answer 23

Bleach

Question 24

What do mitochondria do?

They pump –— across a membrane, creating pressure for electrons to follow.

Answer 24

Remember, mitochondria are the powerhouse of the cell. They pump protons across a membrane, creating pressure for electrons to follow. This forms an electrical gradient which your body exploits to create the “energy currency” ATP

Question 25

____ is the study of how your behaviours and environment can cause changes that affect the way your genes work.

Answer 25

Epigenetics

(Maybe an infection, cancer etc) Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence.

Question 26

acetaminophen = also known as

Answer 26

paracetamol

Question 27

When will Sun die?

Answer 27

In about 5.5 billion years

Run out of hydrogen and begin expanding as it burns helium