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Physics for IGCSE & O level - The Earth In Space (Section 4)

1
What is a key factor to consider when building a simple pendulum?
Answer
(D)
All of the above
2
What safety precaution applies when working with a hot plate and beaker?
Answer
(D)
All of the above.
3
What is the acceleration of the motorcycle during the first 10 seconds?
Answer
(C)
1 m/s²
4
Where should the hot glass tubes be left?
Answer
(D)
On a heatproof mat.
5
What can you use to control the temperature of the wire?
Answer
(C)
A beaker of water
6
What does the word 'atom' come from?
Answer
(A)
Greek
7
What is the new pressure of the air?
Answer
(A)
66.7 kPa
8
What do the white spectrum represent after passing through the glass prism?
Answer
(A)
Combination of all colors
9
What is the area of a triangle calculated with?
Answer
(D)
All of the above
10
When creating a graph from experimental data, what is essential?
Answer
(C)
The axes have labels with units
11
What should be done to keep the wire at a steady temperature?
Answer
(D)
Use a water bath
12
Which of the following is NOT a concept relating to the origin and evolution of the universe as discussed?
Answer
(D)
Nuclear Fusion
13
When working with a burner, what does it mean to make sure the flame is blue and stable?
Answer
(D)
All of the above.
14
What is redshift?
Answer
(B)
Shift of light towards red end
15
When heating a test tube, what should you do?
Answer
(D)
Point it away from yourself and others.
16
What type of graph is often used to show proportions or percentages?
Answer
(C)
Pie chart
17
Who discovered that some of the atoms have different number of particles?
Answer
(C)
Thomson
18
What should be the first thing when taking readings?
Answer
(A)
Take plenty of readings
19
When analyzing your data, what should you do before drawing a line of best fit?
Answer
A
B
20
How can you check the reliability of your findings?
Answer
(D)
Doing all the above
21
In the Big Bang theory, what is the origin of all matter and energy?
Answer
(C)
From a singularity
22
Which of the following is considered a key piece of evidence supporting the Big Bang theory?
Answer
(C)
The cosmic microwave background radiation
23
What does the abbreviation 'i.e.' stand for?
Answer
(C)
That is
24
What does the text say you should identify when evaluating your data?
Answer
(C)
Uncertainties
25
What do astronomers use to measure the speed at which galaxies are moving away from Earth?
Answer
(C)
The redshift of the light.
26
State two conditions needed for an object to be in equilibrium.
Answer
A
C
27
If there is something wrong in the lab, what should you do?
Answer
(C)
Inform your instructor
28
What causes sparks when it is produced by rubbing?
Answer
(A)
Electric charge
29
What does the redshift of light from distant galaxies provide evidence for?
Answer
(C)
The universe is expanding.
30
What can be used to measure a practical test?
Answer
A
B
C
D
31
Which part of the electromagnetic spectrum is the Cosmic Microwave Background Radiation (CMBR) found in?
Answer
(C)
Radio waves
32
What is the purpose of using eye protection in the lab?
Answer
(C)
To protect the eyes
33
What should you ensure when working with a beaker?
Answer
A
B
34
Which is the measuring instrument?
Answer
(D)
Springs and balances
35
What could happen if you fail to follow the directions of an experiment?
Answer
(B)
The experiment may not work properly
36
Which of the following are types of assessment?
Answer
A
B
37
What instrument can be used for measuring angle?
Answer
(B)
Protractor
38
What did James Clerk Maxwell contribute to?
Answer
(C)
Understanding of electromagnetism
39
Which of the following energy resources does NOT have the Sun as its main source of energy?
Answer
(A)
geothermal
40
What is the measure of the kinetic and potential energies of all the particles?
Answer
(D)
Internal energy
41
What should you do if a chemical spills on your skin?
Answer
(B)
Rinse the area with water.
42
Which statement explains why it is better to calculate the average time for 3 drops of water to fall rather than 1 drop?
Answer
(A)
to get a higher accuracy in the data.
43
Which components are used in an electric circuit?
Answer
(B)
resistor
44
Which of the following energy resources does NOT have the Sun as its main source of energy?
Answer
(A)
geothermal
45
What does the text mention that helps show the speed at which galaxies are moving?
Answer
(B)
Redshift
46
When recording measurements, what is important to include?
Answer
(B)
The unit of measurement
47
What is another name for thermal energy?
Answer
(B)
Heat
48
What does 10^-2 mean?
Answer
(B)
1/100
49
Which symbol is typically used to represent a percentage?
Answer
(A)
%
50
What should you do before making any changes to the wiring in your circuit?
Answer
(B)
Switch off the power supply