View from Earth - Observing the Universe

What is a telescope?

• A device that measures time

• An instrument that collects and focuses light

• A machine that predicts weather

• A tool for measuring distances on land

What is a spectroscope?

• A device that measures the intensity of light.

• An instrument that spreads light into different wavelengths.

• A telescope that magnifies distant objects.

• A tool for measuring the distance to stars.

What can astronomers study using a spectroscope?

• The age of stars.

• The distance to stars.

• Stars' characteristics, such as temperature, compositions, and energies.

• The movement of planets.

Which element has more spectral lines in the provided emission spectrum?

• Hydrogen

• Helium

• Both have the same number of spectral lines

• It is impossible to determine from the given image

What is the Electromagnetic Spectrum?

• A) A device used to measure electric current

• B) The entire range of radiant energy carried by electromagnetic waves

• C) A spectrum showing the different charges of particles

• D) The visible light that can be seen by the human eye

What can electromagnetic waves transfer through matter or space?

• Sound

• Heat

• Energy

• Light

What is the energy transferred by electromagnetic waves through matter or space called?

• Kinetic energy

• Potential energy

• Radiant energy

• Chemical energy

Which of the following is part of the electromagnetic spectrum?

• Radio

• Ultraviolet

• X-ray

• All of the above

What is the correct order of the electromagnetic spectrum from longest to shortest wavelength?

• Radio, Microwave, Infrared, Visible light, Ultraviolet, X-ray, Gamma

• Gamma, X-ray, Ultraviolet, Visible light, Infrared, Microwave, Radio

• Visible light, Infrared, Microwave, Radio, Ultraviolet, X-ray, Gamma

• Ultraviolet, Visible light, Infrared, Microwave, Radio, X-ray, Gamma

Which part of the electromagnetic spectrum is used for microwave ovens?

• Radio waves

• Microwaves

• Infrared radiation

• Visible light