2524261
Descripción
Test por Bradley Logan, actualizado hace más de 1 año
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Creado por Bradley Logan
hace alrededor de 9 años
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Pregunta 1
Pregunta
Isotopes are different forms of the same element.
Respuesta
- True
- False
Pregunta 2
Pregunta
What is the difference between isotopes?
Respuesta
-
Isotopes have a different number of protons and a different number of neutrons.
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Isotopes have a different number of neutrons and the same number of protons.
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Isotopes have a different number of protons and the same number of neutrons.
Pregunta 3
Pregunta
Alpha radiation particles have ________ and ________
Respuesta
-
Two neutrons.
-
Two protons.
-
One neutron
-
Three protons
-
Two electrons
Pregunta 4
Pregunta
What properties are typical of a Beta particle?
Respuesta
-
They have a charge of -1.
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They are large.
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They move fast.
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They move slowly.
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They are small.
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They have a charge of 0.
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They are in simple terms, a neutron.
Pregunta 5
Pregunta
Gamma rays are long wavelength electromagnetic waves.
Respuesta
- True
- False
Pregunta 6
Pregunta
Nuclear fusion is the process carried out in nuclear power stations to generate energy.
Respuesta
- True
- False
Pregunta 7
Pregunta
Which process releases more energy, Fission or Fusion?
Respuesta
-
Fission.
-
Fusion.
Pregunta 8
Pregunta
Nuclear fusion is done in stars such as the sun.
Respuesta
- True
- False
Pregunta 9
Pregunta
What happens in the process of nuclear fission?
Respuesta
-
A chain reaction takes place.
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Nuclei are split up.
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Nuclei are joined together.
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The energy released is used to heat water, to create steam for generators.
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The energy released is used to turn the turbines in wind turbines.
Pregunta 10
Pregunta
What stage of it's life is our sun at?
Respuesta
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Red giant.
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Black hole.
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Protostar
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Main sequence star
Pregunta 11
Pregunta
What elements are used in the energy process in stars at our sun's stage?
Respuesta
-
Helium.
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Uranium-235.
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Plutonium-239.
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Hydrogen.
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Iron.
Pregunta 12
Pregunta
What happens after the red giant stage of a star's life?
Respuesta
-
A supernova takes place as the star explodes.
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A neutron star is created.
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A black hole is created.
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A white dwarf is created.
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A black dwarf is created.
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A planetary nebula is ejected around the star system, from the outer layer of the star.
Pregunta 13
Pregunta
Half life is the average time it takes for the number of nuclei in an isotope to halve.
Respuesta
- True
- False
Pregunta 14
Pregunta
What is radiation used for in medical practises?
Respuesta
-
Abortion of babies.
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Sterilising instruments.
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Tracers, followed by an external detector.
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Radiotherapy, the killing of cancerous cells.
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The sterilisation of the mouth in extreme dental cases.
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