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AQA Science in Context Unit 1 Revision Flashcards | StudBud
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AQA Science in Context Unit 1 Revision
AQA Science in Context Unit 1 Revision
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Revision questions on AQA Science in Context Unit 1 Chapter 1 and some of Chapter 2
Flashcards
30 cards
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Questions
30
Answers
1
What happens to the wavelength of an object that is moving towards you?
It becomes less frequent
It becomes more frequent
2
What is a compound made up of?
Two or more different atoms chemically joined together
Two or more different types of atoms mixed together
Two or more different molecules chemically joined together
Only one type of atom
3
If an object is moving away from you, what colour shift would you see?
Red
Blue
4
What is the theory that explains how the universe began?
Cosmic Background Radiation
Red Shift
The Big Bang
The Doppler Effect
5
What tells us the number of electrons in an atom?
Mass Number
Chemical Symbol
Proton Number
6
Why can life exist on Earth?
We have water present in all three states
Our atmosphere contains toxic gases
The sun keeps us warm, not too hot and not too cold
The surface of the Earth is molton
7
How much oxygen is present in our atmosphere?
13%
0.04%
21%
30%
8
Which materials can be used straight from the Earth?
Sulphuric acid
Crude Oil
Gold
Limestone
9
What is an ion?
A charged particle
An atom with a different number of protons
A molecule of lots of different atoms
An atom with different number of neutrons
10
How did oxygen begin to enter the atmosphere?
Volcanoes can emit oxygen
Water molecules split into hydrogen and oxygen
Living things began to respire
Plants began to photosynthesise
11
What is the definition of the greenhouse effect?
The trapping of the Sun's warmth in the atmosphere
The release of the Earth's warmth from the atmosphere
The increase in temperature of the Earth
12
What are the waste products of photosynthesis?
Glucose
Light
Oxygen
Water
13
How does an ion occur?
An atom gains or loses an electron
An atom gains or loses a proton
An atom gains a neutron
An atom gains a proton
14
What is algae an example of?
Virus
Single celled organism
Multi-cellular organism
Bacteria
15
What does Earth's atmosphere consist of?
Oxygen
Nitrogen
Argon
Water
16
How much nitrogen is present in our atmosphere?
80%
78%
70%
74%
17
If a hydrocarbon has a long carbon chain, what properties is it likely to exhibit?
Dark coloured
Easy to light
Hard to pour (very viscous)
Easily turns into a gas (very volatile)
18
What gases can volcanoes emit?
Ammonia
Methane
Water vapour
Carbon dioxide
19
Which is the biggest object?
Pluto
Earth
The Sun
The Moon
20
What are stars made up of?
Extremely hot gases
Liquid rock
Solid rock
Ice
21
Which of the following bodies are found in our solar system?
Mars
The Milky Way
Venus
Galaxy
22
Which gases do we extract from the atmosphere for use in industry?
Argon
Helium
Nitrogen
Carbon dioxide
23
What is an element?
An atom made up of one type of molecule
A substance made up of only one type of atom
A mixture of atoms
Two or more atoms chemically joined together
24
What process do we use to extract gases from the atmosphere, and fractions from crude oil?
Sublimation
Distillation
Filtering
Fractional Distillation
25
What are the problems with Space based telescopes?
Difficult to visit if they need repairing
Can spoil our images because of the atmosphere
Expensive
26
How did the oceans form on Earth?
The water vapour evaporated and fell as rain
It leaked from the volcanoes
The ice caps melted
The water vapour condensed and fell as rain.
27
What charge does a proton have?
Neutral
Positive
Negative
28
What tells us the number of protons in an atom?
Mass Number
Chemical Symbol
Proton Number
29
What charge does an electron have?
Negative
Neutral
Positive
30
What types of electromagnetic radiation are NOT absorbed by the Earth's atmosphere?
X-Ray
Gamma
Visible
Radio
