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