Turning Points in Physics AQA Physics Active Recall Questions Prompts Revision
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Course
Turning Points in Physics
Institution
AQA
This document contains 199 questions, ready to fill, based on the Turning Points in Physics topic for AQA Physics. These questions are based on every point in the Specification provided by AQA, therefore covering all content required from this module.
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Turning Points Active Recall QUESTIONS:
1. What is a cathode ray tube?
2. What is a cathode ray?
3. What does a cathode ray look like?
4. Where does the ray glow the
brightest? Why?
5. What four properties do cathode
rays have?
6. What was it concluded that
cathode ray particles were?
7. What is the process by which the
discharge tube begins to glow?
8. How are ion and electron pairs
formed in the discharge tube?
9. Where is the gas ions accelerated
towards?
10.What happens when the gas ions
collide with the cathode? Why?
11.When electrons formed from gas
ions are accelerated along the tube
what happens?
12.How is the glow produced?
13.What is thermionic emission?
14.How does an electron gun use
thermionic emission?
15.What is the equation for work done
on a charged particle in an electric
field?
16.What is the work done on an
electron accelerated through a
potential difference?
17.As an electron moves from the
cathode to an anode in an electron
gun which energy does it originally
have that it is converted to? What
does this make the electrons do?
18.When an electron reaches an
anode, its kinetic will be equal to
what?
19.What is a fine beam tube?
20.What happens when you released
electrons from an electron gun into
a fine beam tube?
21.When electrons move through the
fine beam tube, how do they
interact with the gas atoms in the
tube? What does this cause the
gas atoms to do?
22.Why can the radius of the circular
path of the electrons be measured
in a fine beam tube once
accelerated into from an electron
gun?
, 23.Using the fine beam tube
experiment, derive the equation
for specific charge
24.Which three main equations are
used to derive the specific charge
using the fine beam tube method?
25.What is Thompsons crossed fields?
26.When electrons are accelerated
into the crossed fields, which
direction does the magnetic field
deflect the electrons and which
direction does the electric field
deflect the electrons?
27.What is done to the strength of the
fields? What is the desired effect
by adjusting the fields?
28.By adjusting the fields, what can
be said about the value of the
magnetic and electric force of the
fields?
29.Derive the specific charge using
Thompsons crossed fields method
30.Which equations are needed for
the derivation of specific charge
using Thompsons crossed fields?
31.Why was Thompsons
determination of specific charge
significant?
32.By proving specific charge was
constant no matter the gas used to
produce the electrons, what did it
show about atoms as a whole?
33.What is the specific charge of an
electron compared to that of a
hydrogen ion?
34.When comparing the specific
charge of an electron and a
hydrogen ion, what does it show
about the specific charges of an
electron and proton?
35.Why was Millikan’s oil drop
experiment formed?
36.What equipment was used to form
the oil drop experiment?
37.What is an atomizer and what
charge does it output the droplets
and why does this happen?
38.When an atomizer sprays droplets
of oil, and it reaches the parallel
plates what happens to the
droplets?
39.How can the strength of the
electric field be adjusted? Why do
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