Unit 6 Super Fun Quiz!

A fun quiz about all things unit 6!

?
What is a stimulus?
A change in organisms environment.
1 of 50
What system helps coordinate animals responses?
The central nervous system
2 of 50
What is a neuron?
A specially adapted cell that carries an electrical signals when stimulated.
3 of 50
what is a synapse?
The gaps between adjacent neurons
4 of 50
What is the process that transfers impulses between neurons?
A nerve impulse reaches the synapses through the sensory neuron. the impulse triggers the release of chemicals, called neurotransmitters, into the synapses. Then Neurotransmitters diffuse across the synapse and bind the receptor molecules.
5 of 50
what is a reflex action?
a reflex is a fast, automatic, involuntary response to stimulus
6 of 50
what are the four reflexes?
stepping, grasping, rooting, sucking reflexes
7 of 50
what happens to your eye in bright light and then in dim light?
light on the retina, impulse via motor nerve to iris muscles, impulse via motor nerve to iris muscles, pupil changes in size.
8 of 50
what is a conditioned reflexes?
a reflex response to a new stimulus can be learned by building an association between stimuluses that naturally triggers the response.
9 of 50
describe a conditioned reflex?
dog with meat and bell
10 of 50
what is a modifying reflex action?
your brain can override e.g it stops you from dropping a hot plate
11 of 50
what is a PET scan?
it provides a 3-D image which shows neuron activity.
12 of 50
What methods can be used to map regions of the regions of the cerebral cortex?
Physiological techniques, Electronic techniques, Magnetic Resonance
13 of 50
how can a dog adapt to its surroundings?
can be trained
14 of 50
what does the cerebral cortex deal with?
they deal with intelligence,memory,languageand consciousness
15 of 50
What is memory?
Memory is the ability to store and retrieve information.
16 of 50
What are the two types of memory
Short-term, and long-term memory
17 of 50
BONUS QUESTION!... What is the capital of Italy?
Rome
18 of 50
What effect do drugs have on the nervous system?
They change the speed at which nerve impulses travel to the brain and send false signals to the brain.
19 of 50
what is chemical synthesis?
it is the process by which raw materials are made into useful products
20 of 50
name the 6 chemical hazard signs
corrosive, explosive, flammable, oxidising, harmful, toxic
21 of 50
describe the ph scale? eg what does it tell us and how do we use it
acidic, neutral and alkaline acidic has a ph number 1 to 6 neutral 7 and acidic are 10 to 14
22 of 50
what do acidic compounds produce when they dissolve in water
hydrogen ions when they dissolve in water
23 of 50
what does exothermic mean?
relises energy usually as heat because the products have less energy then the reactant did
24 of 50
what does endothermic mean?
these are less common then exothermic changes, take in energy so usually feel cold to touch more energy than reactant did
25 of 50
what is the percentage yield equation?
percentage yield = actuel yield divided by theoretical yield X 100
26 of 50
what is the use of a catalyst?
helps speed up the reaction and does not get used up
27 of 50
what is the relative atomic mass?
shows the mass of one atom in comparison to the mass of other atoms
28 of 50
what is titration?
it is used to calculate the concentration of an acid by finding out how much alkali is needed to neutralise it.
29 of 50
name 4 ways to change the rate of reaction
increase the temperature, increase the concentration of dissolved reactants, increase surface area by grinding lumps into powders and using a catalyst
30 of 50
What are all element made up of?
Atoms
31 of 50
What do all atoms contain?
A nucleus and electrons
32 of 50
What is the nucleus made up of?
Protons and Neutrons
33 of 50
What are the three types of ionising radiation?
Alpha, Beta and Gamma :)
34 of 50
Which type of radiation can go through lead?
Gamma radiation
35 of 50
When is ionising radiation emitted?
When the nucleus of an unstable atom decays.
36 of 50
BONUS QUESTION!!!! What is 20 times 1.34
26.8
37 of 50
What is background radiation?
Natural radiation that does not harm humans
38 of 50
What is the main source of background radiation?
Radon Gas
39 of 50
What contributes the least to background radiation?
The Nuclear Industry
40 of 50
as a radioactive atom decays, its activity drops or rises?
drop
41 of 50
How do you measure the half life?
divide by 2 each time
42 of 50
How is a substance considered safe?
once its activity drops to the same background radiation
43 of 50
what can we use radiation for?
cancer treatment, sterilising surgical instruments, sterilising food, for using PET scans
44 of 50
what are the 3 types of nuclear waste?
high-level waste. intermediate-level waste. low-level waste
45 of 50
define high level waste
very radioactive waste that has to be stored carefully
46 of 50
what is nuclear fission?
nuclear fission takes place in the nucleus of the atom and different elemetns a
47 of 50
what happens to the neutron in nuclear fission?
the neutron is absorbed b a large and unstable uranium nucleus
48 of 50
what happens in a nuclear reactor?
nuclear reactors crate steam. the fuel rods become very hot so control rods are used to control the heat. coolent is used to keep everything safe. the control rods are made of boron
49 of 50
what does E=mc2 stand for?
energy = the mass x speed of light in a vacuum squared
50 of 50

Other cards in this set

Card 2

Front

What system helps coordinate animals responses?

Back

The central nervous system

Card 3

Front

What is a neuron?

Back

Preview of the front of card 3

Card 4

Front

what is a synapse?

Back

Preview of the front of card 4

Card 5

Front

What is the process that transfers impulses between neurons?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »