Physics Questions and Answers
Q1.
The ancient Greeks thought that atoms were tiny spheres that could not be divided into
anything smaller.
Since then, different discoveries have led to the model of the atom changing.
Some of the discoveries are given in the table below.
The mass of an atom is concentrated in the nucleus. A
Electrons orbit the nucleus at specific distances. B
The nucleus contains neutrons. C
The nucleus contains positively charged protons. D
(a) Which discovery was the earliest?
Tick (✓) one box.
A B C D
(1)
(b) Which discovery was the most recent?
Tick (✓) one box.
A B C D
(1)
(c) The alpha particle scattering experiment led to the nuclear model of the atom.
The figure below shows the paths of alpha particles travelling close to a gold
nucleus.
Page 1 of 36
, Complete the sentences.
Choose answers from the box.
Each answer may be used once, more than once or not at all.
attracts decreases does not change
increases reflects repels
Alpha particles and gold nuclei are both positively charged.
The gold nucleus _________________________________ the alpha particles.
As the alpha particle approaches the gold nucleus, the electric field strength
experienced by the alpha particle _________________________________.
As an alpha particle approaches the gold nucleus, the force
experienced by the alpha particle _________________________________.
(3)
(d) The results of the alpha particle scattering experiment were reproducible.
What does reproducible mean?
Tick (✓) one box.
Another scientist repeats the experiment and gets the
same results.
Another scientist repeats the experiment and gets
different results.
Page 2 of 36
, The same scientist repeats the experiment and gets
the same results.
The same scientist repeats the experiment and gets
different results.
(1)
(Total 6 marks)
Q2.
(a) Figure 1 shows the electromagnetic spectrum.
Figure 1
Which statement is correct for the direction of the arrow in Figure 1?
Tick (✓) one box.
The wavelength decreases and the wave speed in air
increases.
The frequency increases and the wavelength increases.
The frequency increases and the wave speed in air stays
the same.
The wavelength increases and the wave speed in air
increases.
(1)
(b) Explain how the properties of X-rays make them suitable for the medical imaging of
bones.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(2)
A student investigated the infrared radiation emitted from the sides of a hollow metal cube.
The sides of the cube are different colours or textures.
Page 3 of 36
Q1.
The ancient Greeks thought that atoms were tiny spheres that could not be divided into
anything smaller.
Since then, different discoveries have led to the model of the atom changing.
Some of the discoveries are given in the table below.
The mass of an atom is concentrated in the nucleus. A
Electrons orbit the nucleus at specific distances. B
The nucleus contains neutrons. C
The nucleus contains positively charged protons. D
(a) Which discovery was the earliest?
Tick (✓) one box.
A B C D
(1)
(b) Which discovery was the most recent?
Tick (✓) one box.
A B C D
(1)
(c) The alpha particle scattering experiment led to the nuclear model of the atom.
The figure below shows the paths of alpha particles travelling close to a gold
nucleus.
Page 1 of 36
, Complete the sentences.
Choose answers from the box.
Each answer may be used once, more than once or not at all.
attracts decreases does not change
increases reflects repels
Alpha particles and gold nuclei are both positively charged.
The gold nucleus _________________________________ the alpha particles.
As the alpha particle approaches the gold nucleus, the electric field strength
experienced by the alpha particle _________________________________.
As an alpha particle approaches the gold nucleus, the force
experienced by the alpha particle _________________________________.
(3)
(d) The results of the alpha particle scattering experiment were reproducible.
What does reproducible mean?
Tick (✓) one box.
Another scientist repeats the experiment and gets the
same results.
Another scientist repeats the experiment and gets
different results.
Page 2 of 36
, The same scientist repeats the experiment and gets
the same results.
The same scientist repeats the experiment and gets
different results.
(1)
(Total 6 marks)
Q2.
(a) Figure 1 shows the electromagnetic spectrum.
Figure 1
Which statement is correct for the direction of the arrow in Figure 1?
Tick (✓) one box.
The wavelength decreases and the wave speed in air
increases.
The frequency increases and the wavelength increases.
The frequency increases and the wave speed in air stays
the same.
The wavelength increases and the wave speed in air
increases.
(1)
(b) Explain how the properties of X-rays make them suitable for the medical imaging of
bones.
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
(2)
A student investigated the infrared radiation emitted from the sides of a hollow metal cube.
The sides of the cube are different colours or textures.
Page 3 of 36
