Physics for IGCSE & O level - The Earth In Space (Section 1)
1
What does the text say about the distance between the galaxies?
2
What is the term for the shift in the spectrum of light from a receding object?
3
Which subjects is covered in the context of orbit?
4
What is an essential safety precaution when working with electricity?
5
If one value doubles, and the other halves, what type of proportion is it?
6
Why is a water bath often used in experiments?
Answer(C)
To keep the temperature constant.
7
What is the primary scientific contribution attributed to Edwin Hubble concerning the universe?
Answer(C)
Demonstrating the expansion of the universe.
8
Which of the following is a key observation supporting the Big Bang theory?
Answer(C)
The cosmic microwave background radiation.
9
Which of the following can be used to calculate the area of a triangle?
10
Describe the image formed by the lens when used as a magnifying glass.
Answer(D)
The image is virtual and between the lens and the eye
11
What can be done to improve the accuracy when you measure the thickness of paper?
Answer(B)
Measuring a pile of sheets and dividing
12
A car of mass 1000kg accelerates at 1 m/s² along a straight, flat road. What is the resultant force acting on the car?
13
Which factors would affect the time it takes for a pendulum to swing?
14
What are some potential hazards that require you to wear safety goggles?
15
A lorry with a mass of 3000 kg has 100 kJ of energy in its kinetic energy store. Calculate the speed of the lorry.
16
What should be done with the power source when not using the appliances?
17
What is one of the topics covered in the 'History of key ideas' section?
Answer(C)
Changing ideas about the Earth and the Universe
18
What type of numbers can be used on the calculator?
19
What type of reading should be taken for a graph?
20
Why should you avoid making direct connections across the terminals of a battery?
Answer(C)
The circuit will overheat.
21
What is the new pressure of the air?
22
What is the best way to estimate the area of the original rectangle?
23
What is the acceleration of the motorcycle in the first 10 seconds?
24
What does it mean when the resistance of the wire increases with the length of the wire?
25
What units are often used when graphing?
26
What is the spring constant of the spring?
27
Which of the following is NOT directly discussed in the provided material relating to the universe?
28
What does the word 'doubles' mean?
29
What is an important aspect of the design of a parachute?
30
When presenting your results in a graph, what must you include?
31
Which of these are key safety practices?
Answer(A)
Always switch the power supply off when not in use
32
What is the safest way to warm a beaker of water?
Answer(B)
Place the beaker on a gauze on a tripod.
33
What is the reciprocal of 2?
34
Which of the following could represent the units for speed?
35
What is the function of a ruler?
36
Which instrument is appropriate for drawing right angles?
37
What does the Big Bang Theory attempt to explain?
Answer(B)
The origin and expansion of the Universe
38
What should be done to support a thermometer when heating?
39
What is the safe working condition for burners and tripods?
Answer(C)
Always ensure the flame is visible.
40
What does the letter 'A' stand for in the context of a circuit?
41
Which of the following are key concepts likely discussed in the topic about the expanding universe?
42
What is the name of the force responsible for responsible for radioactive decay?
43
What does the text imply about the relationship between the observed redshift and the distance to the galaxy?
Answer(C)
Redshift increases with distance.
44
What is the primary tool used to detect and measure CMBR?
45
How is the area of the rectangle found?
46
What should you do when you measure the temperature of a liquid?
47
What is the spring constant of the spring?
48
What does a higher frequency mean?
