cosmos research methods

What is the definition of parallax in astronomy?

• Parallax is the apparent shift in position of a nearby star due to the observer's change in position.

• Parallax is the measurement of a star's temperature based on its color.

• Parallax refers to the brightness of a star as seen from Earth.

• Parallax is the distance between two stars in the same constellation.

How is astronomical parallax measured?

• Through the use of telescopes to capture star colors.

• Astronomical parallax is measured by observing the apparent shift in a star's position from two different points in Earth's orbit.

• By measuring the brightness of a star over time.

• By calculating the distance based on star temperature.

What role does the Earth's orbit play in determining parallax?

• The Earth's orbit determines the color of stars.

• The Earth's orbit influences the temperature of stars.

• The Earth's orbit provides a baseline for measuring stellar parallax.

• The Earth's orbit affects the brightness of stars.

What is the significance of parallax in measuring distances to stars?

• Parallax allows astronomers to measure the distance to stars by observing their apparent movement against distant background stars.

• Parallax is a method for calculating the brightness of stars.

• Parallax helps in determining the chemical composition of stars.

• Parallax is used to measure the temperature of stars.

How the color of observed object can change when it's moving toward observer?

• appears redder

• appears bluer

Which of the following colors of light has the shortest wavelenght?

• yellow

• red

• violet

• green

What is the definition of spectral analysis in astronomy?

• Spectral analysis is the distance between two stars in the same constellation.

• Spectral analysis is the study of the light spectrum emitted by stars to determine their composition and properties.

• Spectral analysis refers to the apparent shift in position of a nearby star due to the observer's change in position.

• Spectral analysis is the measurement of a star's distance based on its brightness.

How is spectrometer used to determine the composition of stars?

• Through the use of telescopes to capture star colors.

• By calculating the distance based on star temperature.

• Spectral analysis is used by observing the light spectrumemitted by a star to identify its chemical composition.

• By measuring the brightness of a star over time.

What's the name of device used to disperse wavelegth/frequency?

proxima centauri

• was the first observed star

• can be seen in the night

• is 1/6 mass of our sun

• is the nearest star to the sun