Which of These Objects Are Used as Standard Candles for Distance

question 46

Multiple Choice

Which of these objects are used as standard candles for distance measurement to distant galaxies?

• A) globular clusters
• B) hot white dwarf stars
• C) supernova explosions
• D) elliptical galaxies

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Definitions:

Ventricular Systole

The phase of the cardiac cycle in which the ventricles contract, pumping blood out of the heart into the arterial system.

Ventricular Diastole

Dilation of the heart ventricles.

ECG

Electrocardiogram, a test that measures the electrical activity of the heart over a period of time.

Cardiac Cycle

refers to the sequence of events that occur in the heart during one beat, including the contraction (systole) and relaxation (diastole) periods.