Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Baldragon Academy Science Junior Phase > Science of The House > Flashcards

Science of The House Flashcards

(99 cards)

Start Studying
1
Q

Which materials are good conductors of heat?

A

Metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which is the best conductor from Steel, Brass, Aluminium and Copper?

A

Copper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is meant by conduction?

A

When heat travels through a material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is everything made from?

A

Particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Explain, in terms of particles, how heat is transferred in conduction.

A

Apply heat and the material gets hot. The particles in this part of the material start to vibrate as they gain energy. This vibration causes the particles next to them to vibrate and this passes the heat energy through the material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is meant by convection?

A

Heat moves through a liquid or a gas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the term for heat moving through a liquid or a gas?

A

Convection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Explain, in terms of particles, how heat is transferred in convection.

A

Where liquid/gas is heated it gets hot. Particles gain energy, vibrate and move away from each other. Particles with most energy move up and their place is taken by particles with less energy. When particles cool they move down to be heated again. This continues until the whole gas or liquid is at the same temperature.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is meant by radiation?

A

When heat is given out as waves from an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the term for heat being given out as waves from an object?

A

Radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the other term used for heat?

A

Infrared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

State three ways to reduce heat loss from a house.

A

Double/triple glazing, loft insulation, draught excluders, cavity wall insulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is current?

A

Charge passing a point per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which device measures current?

A

Ammeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which device measures voltage?

A

Voltmeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the symbol for an ammeter?

A

Circle with an A in it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the symbol for a voltmeter?

A

Circle with a V in it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How should an ammeter be connected to measure the current in a component?

A

It should be connected in series with the component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How should a voltmeter be connected to measure the voltage across a component?

A

It should be connected across the component

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How can you identify a series circuit?

A

It is a circuit with only one path round it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What happens if you unscrew one of the lamps in the circuit below? Why?

A

The other lamps go out. There is a break in the circuit and the current does not have a complete route to the battery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

How can a parallel circuit be identified?

A

It is a circuit with more than one path round it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Which circuit component is represented by the following diagram?

A

Cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Which circuit component is represented by the following diagram?

A

Switch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Which circuit component is represented by the following diagram?
Lamp
30
Which circuit component is represented by the following diagram?
Motor
31
Which circuit component is represented by the following diagram?
Resistor
32
Which circuit component is represented by the following diagram?
Variable Resistor
33
Which circuit component is represented by the following diagram?
Wire
34
Which circuit component is represented by the following diagram?
Buzzer
35
Which circuit component is represented by the following diagram?
Battery
38
What is the rule for current in a series circuit?
The current is the same everywhere
39
What is the rule for voltages in a series circuit?
The voltage across each component added together is equal to the supply voltage.
42
What is the rule for current in a parallel circuit?
The supply current is equal to the current in each branch added together.
43
What is the rule for voltages in a parallel circuit?
The voltage across each branch is equal to the supply voltage.
44
What is meant by a short circuit?
When there is a fault in a circuit that means the circuit has a lower resistance than it should.
45
State one cause of a short circuit.
* A loose screw across bare wires * Solder coming loose and touching bare wires * Wire coming loose touching another part of the circuit
46
Why is a short circuit dangerous?
There is a large current
47
What is the purpose of a fuse?
To protect the flex
48
Explain how a fuse works.
* A fault develops meaning that there is a high current * The wire in the fuse gets hot and melts * This creates a break in the circuit
49
Are house lights wired in series or parallel?
Parallel
50
Why are house lights wired in parallel?
So if one breaks the others will stay on.
51
Name the 5 types of mictoorganisms
* Fungi * Protozoa * Algae * Bacteria * Viruses
52
What type of microorganism is yeast?
Fungus
53
What do we use yeast to make?
* Bread * Alcohol
54
Which microorganism is used to make bread and alcohol?
Yeast (Fungus)
55
Which microorganism is used to make yoghurt?
Bacteria
56
What two conditions do microorganisms need to grow well?
* Nutrients(food) * Warmth
57
How can you remove microorganisms from your skin?
Wash your hands with soap and water.
58
Name 2 common household acids.
* Vinegar * Fizzy juice * Lemon juice * Fruit juice
59
Name 2 household alkalis.
* Oven Cleaner * Soap * Toothpaste
60
What colour is litmus blue in an acid?
Red
61
What colour is litmus blue in an alkali?
Blue
62
What colour is litmus blue in a neutral substance?
Blue
63
What colour is litmus red in an acid?
Red
64
What colour is litmus red in alkali?
Blue
65
What colour is litmus red in a neutral substance?
Red
66
What type of substance does litmus red identify?
Alkali
67
What type of substance does litmus blue identify?
Acid
68
What colour does phenolphthalein go in acid?
Stays clear
69
What colour does phenolphthalein go in alkali?
Pink
70
What colour is phenolphthalein in neutral substances?
Clear
71
What colour is universal indicator in acid?
Red
72
What colour is universal indicator in alkali?
Purple / Blue
73
What colour is universal indicator in a neutral substance?
Green
74
Which pH numbers are acidic?
pH1 - pH 6
75
Which pH numbers are alkaline?
pH 8 - 14
76
Which pH number is neutral?
pH 7
77
What is the advantage of using universal indicator?
It can identify acids and alkalis and their strength
78
What is the pH of a weak acid?
pH 6
79
What is the pH of a strong acid?
pH 1
80
What is the pH of a weak alkali?
pH 8
81
What is the pH of a strong alkali?
pH 14
82
How are particles arranged in a solid?
In rows and columns
83
How are particles arranged in a liquid?
Close together but jumbled
84
How are particles arranged in a gas?
Far apart and moving
85
What is voltage?
A measure of the energy transferred by the charge
86
State the energy change in a lamp.
Electrical energy to light energy
87
State the energy change in a motor.
Electrical energy to kinetic energy
88
State the energy change in a buzzer.
Electrical energy to sound energy.
89
State the energy change in a cell or battery.
Chemical energy to electrical energy.
90
State 2 places a variable resistor could be used.
* light dimmer switch, * volume control, * brightness control, * speed control on a Scalextric car
91
What components do you need to make a continuity tester?
* Battery or cell * Lamp * 3 wires
92
Explain how a continuity tester works.
A battery is connected in series with a lamp, but a gap is left in the circuit. The device being tested is placed in the gap - if the lamp lights the component is ok, if the lamp does not light then the device is broken.
93
Describe an advantage of having two lamps connected in parallel.
If one lamp breaks the other will remain lit as it still has a complete route to the battery.
94
State the word equation for making alcohol.
Sugar + Yeast → Alcohol + Carbon Dioxide
95
Explain how heating food until it is piping hot helps to keep it safe.
The microbes need nutrients and warmth to grow, by making it piping hot it is too hot for the microbes and they are killed. So the food contains less microbes.
96
Explain how putting food in a fridge helps to keep it safe.
The microbes need nutrients and warmth to grow, the fridge is cold so the microbes cannot grow. So there are less microbes on the food.
97
State the what is meant by an indicator.
A chemical that produces a colour change in acids or alkalis.
98
Name the acid that is in vinegar.
Ethanoic acid
99
Name this piece of science equipment.
Conical flask
100
Name this piece of science equipment.
Burette
101
Name two types of pollution that contribute to acid rain.
* Burning fossil fuels * Vehicle fumes from exhausts
102
Name two gases that contribute to acid rain.
* Sulphor dioxide * Nitrogen oxides
103
State a effect of acid rain on stone or metal structures.
* Stone starts to dissolve. * Metals will corrode (rust)
104
The the gas produced when an acid reacts with a metal.
Hydrogen
105
State the test for hydrogen gas.
Burns with a squeaky pop.
106
As copper is a good conductor of heat, suggest a use for it.
* pans * water pipes * radiator pipes
107

Baldragon Academy Science Junior Phase (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions