science
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- Created by: sasha
- Created on: 24-11-12 19:08
What is a hypothesis?
A statement linking the independent and dependent variables. This is what we test in a experiment.
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What is a independent variable?
This is something you change in a experiment.
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What is a dependent variable?
This is what we measure in a experiment.
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What is a controlled variable?
This is what stays the same throughout a experiment.
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What is continuous data?
Data that has lots of values. (it can change)
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How is continuous data mesured?
In a line graph. for example hight in a class or foot length.
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What is categoric data?
Data that falls into certain categories. for example eye colour. (it can't change)
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What is a nerve cells scientific name and what does is do?
It's scientific name is Neuron and it carry s signals over long distances. it can do this because it is very long.
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Parts of the nervous system.
Brain, Spinal cord, Nerves
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What are the ear and nose a part of?
The sense organs.
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What is Innate behaviour?
Something you know when you are born. Programmed into your brain automatically.
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What are 3 parts of a neuron?
1. Membrain 2. Nucleus 3. Cytroplasm
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What does a membrain do?
Protect the cell.
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What does a nucleus do?
Tells the cell what to do?
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What happens in the cytoplasm do?
This is where reactions happen.
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What is learned behaviour?
Something that you learn over time.
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Examples of inate behaviour.
1. flinching to hot things. 2. sneezing. 3. crying
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Examples of learned behaviour.
1. walking. 2. talking. 3. righting.
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what is external stimuli?
anger caused by others.
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what is a internal stimuli?
emotional anger.
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parts of a flour.
petal, stigma, sepal, ovary, ovules, nectary, filament, anther.
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what are the reproductive systems of a plant?
stigma and a style.
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What do the rings in a tree show?
How old it is. each ring shows each year.
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Why is natural rubber unsuitable for car tires?
Because it would turn into plastic.
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What is the process taken to improve the properties of rubber?
Vulcanising.
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What is Vulcanising?
Melting rubber and adding Sulfur to create bonds that help the rubber to be more durable. it makes the rubber harder.
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Types of natural material
sand, natural rubber, mud, shells, wood, cotton, wool.
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Types of synthetic material
concrete, man made rubber, polyester.
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what is a polymer?
lots of monomers joined together in a chain.
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what is a general item of a polymer?
plastic bags
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what happens to polymers to increase strength?
made into fibres by kevlar.
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proprietaries of kevlar.
make fibre 5 times stronger that steal, spread out force of a bullet.
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Why are modern air ships filled with helium instead of hydrogen?
because hydrogen is flammable.
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What are cross links?
The sulfur in tires
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What is a composite material?
2 things put together that have totally different properties to make something different.
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what is the difference between vulcanised rubber and normal rubber?
vulcanised rubber is stronger than normal rubber.
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what has to stay the same in a equation?
the mass on ether side
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what colour does cobalt chlorate paper go when water is detected?
pink
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on a skanky diagram what needs to remain the same on each side?
the mass
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what is energy measured in?
jewels
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types of energy:
thermal energy, kenetik energy, heat, force, nucleur energy, electric, us full and wasted energy
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how many jewels are at the beginning of a skanky diagram?
100
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Other cards in this set
Card 2
Front
What is a independent variable?
Back
This is something you change in a experiment.
Card 3
Front
What is a dependent variable?
Back
Card 4
Front
What is a controlled variable?
Back
Card 5
Front
What is continuous data?
Back
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