Science Flashcards
Write the equation for aerobic respiration.
Glucose + Oxygen -> Carbon dioxide + Water.
Write equation for anaerobic respiration.
Glucose -> Acid.
Does the air we breathe in have more or less oxygen than the air we breathe out?
More.
Does the air we breathe in have more or less carbon dioxide than the air we breathe out?
Less.
What are the problems associated to the tar in cigarettes?
The tar can cause cancer.
What are the problems associated to the nicotine in cigarettes?
Nicotine is addictive.
What are the problems associated to the carbon monoxide in cigarettes?
The carbon monoxide can block the airways.
If the bicep contracts, what does the tricep do?
The tricep retracts.
What do red blood cells carry?
They carry Oxygen.
What do vaccinations contain?
Vaccinations contain a dead or weakened version of the main virus.
What do vaccinations cause white blood cells to produce?
They contain antibodies to neutralise the virus.
What do some of these white blood cells then become to remember the infection?
They become memory cells.
What is the difference between a chemical and a physical reaction?
A chemical reaction is irreversible and a physical reaction is reversible.
Universal indicator will turn which colours in acid, alkali and neutral solutions?
Acid = Red Neutral = Green Alkali = Purple
What are the pH’s of the strongest acid and the strongest alkali?
Strongest acid = pH 1
Strongest alkali = pH 14
Why would you add an alkali to a pond after acid rain has fallen there?
The alkali would neutralise it and make it normal water again.
Magnesium + oxygen →
Magnesium Oxide
Magnesium + chlorine →
Magnesium Chloride
What is the useful energy transferred in a light bulb?
The useful energy is light energy.
What is the wasted energy transferred in a light bulb?
The waste energy is sound and heat energy.
List the four energy transfers in a power station.
Chemical, Heat, Kinetic, Electric
When a diver jumps off the high board, which force is pulling him downwards?
Gravitational Force.
When a diver jumps off the high board, which force is pushing up against him?
Upthrust Force.
Which two forces act in the opposite direction to the forward movement of a car on the road?
Friction and drag.
