Observing the Universe

Which of the following statements best explain the benefits of using space telescopes? Select all that apply.

• Space telescopes don't have to be launched into space.

• Space telescopes are not affected by weather.

• Space telescopes can obtain the clearest, most detailed images of space.

• Space telescopes have discovered alien life.

Answer explanation

Space telescopes are not affected by weather and can obtain the clearest, most detailed images of space, making them advantageous for astronomical observations.

Tags

HS-ESS1-2

The dark lines that show astronomers what elements are present in Stars are called ​ (a)   .

• Star-Spectra

• Light-Year

• Astronomical Unit

• Electromagnetic Spectrum

Answer explanation

The dark lines that show astronomers what elements are present in Stars are called Star-Spectra.

Tags

HS-ESS1-2

What are groups of stars as seen from Earth called?

{Often names come from ancient cultures or stories}

• Constellations

• Zodiac

• Light-Years

• Galaxies

Answer explanation

Groups of stars as seen from Earth are called constellations. These names often come from ancient cultures or stories, making them significant in various traditions.

Tags

HS-ESS1-2

Approximately how fast does light travel in space?

• 3 km/s

• 3,000 km/s

• 300 km/s

• 300,000 km/s

Answer explanation

Light travels at a speed of 300,000 km/s in space, making the correct answer choice 300,000 km/s.

Tags

HS-ESS1-2

A ​ (a)   is the distance ​ (b)   travels in one ​ (c)   . This is the standard ​unit of measurement scientists use for measuring distances between ​ (d)   and galaxies.

• light-year

• light

• year

• stars

• Astronomical Unit

Answer explanation

The term 'light-year' is the distance light travels in one year, used by scientists to measure distances between stars and galaxies.

Tags

HS-ESS1-2

Which magnifies the image in a telescope?

• focal length

• eyepiece

• objective

• focus

Answer explanation

The eyepiece magnifies the image in a telescope by focusing the light rays and enlarging the image for the viewer.

Tags

HS-ESS1-2

Use the equation M_p = f_o/f_e to determine the magnifying power of a telescope in which the focal lengths of the objective lens and the eyepiece lens are 1500 mm and 9 mm, respectively.

[Number only, no units]

Mathematical Equivalence

ON

Tap the [2 spots] above the spectra lines that PROVE the Sun has Helium.

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS1-3

True or False?

Radio telescopes observe visible light.

• True - Radio telescopes detect light.

• False - Radio telescopes detect Star Spectra.

• False - Radio telescopes detect radio waves.

• False - Radio telescopes detect gamma rays.

Answer explanation

Radio telescopes detect radio waves, not visible light. They are designed to observe and study celestial objects emitting radio frequencies.

Tags

HS-ESS1-2

If the universe was contracting (getting smaller) we would know because the wave frequency would _________.

• Increase

• Decrease

• Stay the Same

Tags

NGSS.HS-PS4-1