Kuiz Fizik Tingkatan 5 Bab 6 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 6 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

What is the primary function of control rods, made of materials like boron or cadmium, inside a nuclear reactor?

To absorb excess neutrons to regulate the rate of the chain reaction.

To slow down fast-moving neutrons to increase the probability of fission.

To transfer heat from the reactor core to the steam generator

To act as the fuel source for the fission process

None

In the equation E=mc2, what does the 'c' represent?

The mass of a carbon-12 atom.

The rate of radioactive decay.

The charge of an electron.

The speed of light in a vacuum.

None

Which statement correctly distinguishes nuclear fission from nuclear fusion?

Fission involves uranium, while fusion involves lead.

Fission releases energy while fusion absorbs energy.

Fission occurs naturally in the Sun, while fusion is used in nuclear power plants.

Fission is the splitting of a heavy nucleus, while fusion is the combining of light nuclei.

None

In the context of a nuclear reactor, what is the primary function of control rods made of boron or cadmium?

To act as the nuclear fuel that undergoes fission.

To slow down fast-moving neutrons to increase the probability of fission.

To absorb excess neutrons and regulate the rate of the chain reaction.

To transfer heat from the reactor core to the steam generator.

None

During beta decay, a neutron within the nucleus is transformed. What are the products of this transformation?

An alpha particle.

A proton and an electron.

A proton and a neutron.

Two protons and an electron.

None

Why is the method of dating rocks using the Uranium-238 to Lead-206 decay series effective for estimating the age of the Earth?

Uranium-238 has a very long half-life, comparable to the age of the Earth.

The decay process is heavily influenced by temperature and pressure within the Earth’s crust.

Lead-206 is a highly radioactive element that decays quickly.

Uranium-238 has a very short half-life, allowing for precise measurements.

None

If a sample of a radioactive isotope has a half-life of 20 days, what fraction of the original sample will remain undecayed after 60 days?

1/4

1/2

1/8

1/16

None

During beta decay, a neutron in an unstable nucleus transforms. What is the effect on the nucleon number (A) and the proton number (Z) of the nucleus?

The nucleon number (A) decreases by one, while the proton number (Z) remains the same.

The nucleon number (A) remains the same, while the proton number (Z) increases by one.

The nucleon number (A) decreases by four, and the proton number (Z) decreases by two.

Both the nucleon number (A) and the proton number (Z) remain unchanged.

None

A radioactive substance has a half-life of 15 minutes. If you start with a sample of this substance, what fraction of the original radioactive nuclei will remain undecayed after one hour?

1/8

1/16

1/2

1/4

None

10.

Which of the following describes a nuclear chain reaction?

The fusion of multiple hydrogen nuclei in a sequential manner within a star.

A series of alpha and beta decays that occur until a stable nucleus is formed.

A self-sustaining process where neutrons released in one fission event trigger further fission events.

A chemical reaction where the products catalyze the next stage of the reaction.

None

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