Astronomy Set

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is a microwave electromagnetic

yes

The normal temperature of the melting point o water ice is:

0 C which means 273 Kelvin

What is the speed of light

3 * 10^8 m/s = 300,000 km/sec

Visible wavelengths of electromagnetic radiation have a range of wavelengths of

400 to 700 nanometers

How to convert from Celcius to Kelvin?

Add + 273

Which object emits no radiation?

An object at temp of 0 Kelvin

Xrays and light

Are the same thing except Xrays have a shorter wavelength than light.

Radio waves travel through space at what speed

At the speed of light.

Pieces of metal are heated by varying amounts in a flame. What color is the hottest?

Blue

Who was the first person to suggest that light is an electromagnetic wave?

James Clerk Maxwell.

What temp scale is used in science?

Kelvin

Sequence of planets:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Who first proved that light is a wave?

Thomas Young

Choose the correct sequence of electromagnetic radiations, in order of increasing wavelengths

UV, visible, IR, radio (Ultraviolet, visible, infrared, radio)

The star Vega has a higher surface temp than the sun therefore

Vega emits more IR and more UV flux than the sun

The planet with its orbit closest to a circle in our planetary system is

Venus

In the full wavelength range of electromagnetic radiation, visible light occupies what proportion of the possible range?

a very narrow range.

The average density of the outer giant planets compared to that of liquid water is

about 1.2 times

A blackbody is

absorbs all radiation falling on it and reflects none

In its iteration with matter, light behaves

as both waves and particles, depending on on the type of iteration.

The hot dense gas existing in the Sun emits energy

at all wavelengths, with a peak at one particular wavelength (color)

the temperature of a gas cloud in space is directly related to

average SPEED of its atoms.

Why scientist use kelvin

because its a meaningful 0.

Visible light occupies which position in the whole electromagnetic spectrum

between infrared and ultraviolet

the average density of the massive Jovian planets is

close to the density of water

Violet light differs from red light in that violet light

has a shorter wavelength than red light.

IN the 1860's Maxwell derived a set of math equations that described electromagnetic waves that could have different wavelengths. These waves which include visible light, have since been shown to

have no wavelength limit, either short or long.

what is planet radiation?

infrared radiation

in comparing photons of different wavelengths, we find that the energy carried by a photon

is larger if the wavelength is shorter

At 0 temp, what condition holds

motion of atoms becomes the minimum possible (but not zero)

Kelvin 0 means

motions of atoms and molecules stop

The mass of a planet is determined primarily by what method?

observation of its gravitational influence on an orbiting moon.

Where and by what technique was helium first discovered?

on the Sun, from spectroscopy during a solar eclipse

which is not electromagnetic

seismic waves

Around 1670, Issac Newton performed a crucial experiment on the nature of light when he

showed that the colors make up white light are intrinsic, not produced by the glass through which the light passes.

The kelvin scale measures

temperature in Celsius-sized degrees above absolute zero.

In terms of wavelengths, gamma rays are

the shortest wavelength electromagnetic waves

In 1675 Romer measured the speed of light by...

timing eclipses of Jupiter's satellites, which appeared to occur later when Earth was farther from Jupiter.

Mean density is

total mass divided by volume

electromagnetic radiation waves in order

visible light, UV radiation, X rays, gamma rays

in a radiowave transmitter (radio TV) when the frequency of the signals is increased the

wavelength is decreased


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