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science > Stars, Galaxies And The Universe - Vocabulary > Flashcards

Stars, Galaxies And The Universe - Vocabulary Flashcards

0
Q

Energy that travels through space in waves

A

electro – magnetic radiation

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1
Q

A device that makes distant objects appear to be closer. It allows us to see distant objects in space

A

Telescope

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2
Q

The light we can see; a type of electromagnetic radiation

A

Visible light

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3
Q

The distance between the crest of one wave and the crest of the next wave

A

Wavelength

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4
Q

The range of different colors with different wavelengths

A

Spectrum

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5
Q

A telescope that uses lenses or mirrors to collect and focus visible light

A

Optical telescope

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6
Q

A telescope that uses convex lenses together in focus light

A

Refracting telescope

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7
Q

A piece of transparent glass, curve so that the middle is bigger then the edges

A

Convex lens

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8
Q

A telescope that uses a curved mirror to collect and focus light. The larger the mirror, the more light the telescope can collect

A

Reflecting telescope

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9
Q

A device used to detect radio waves from objects in space. It has a curved, reflecting surface and focuses radio waves the way the near focuses light waves.

A

Radio telescope

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10
Q

The building that contain one or more telescopes. Many are located on mountaintops, but some are located in space

A

Observatory

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11
Q

Imaginary patterns of stars

A

Constellations

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12
Q

I device that breaks light into colors and produces an image of the resulting spectrum. It is used to determine the elements found in stars.

A

Spectrograph

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13
Q

The stars brightness as seen from Earth. It can be measured by electronic devices

A

Apparent brightness

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14
Q

The brightness of the star would have if it were at a standard distance from the earth. It is more difficult to find a stars absolute brightness then it’s apparent brightness

A

Absolute brightness

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15
Q

The distance that light travels in one year, about 9.5 million kilometers

A

Light – year

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16
Q

The apparent change in position of an object when you look at it from different places

A

Parallax

17
Q

A diagram that compares the stars brightness to its temperature, used to classify stars

A

Hertzsprung- Russell diagram

18
Q

The area on the H – R diagram where most of the stars are located

A

Main sequence

19
Q

A large cloud of gas and dust spread out in any meds volume: the beginning of the story

A

Nebula

20
Q

A contracting cloud of gas and dust with enough mass to form a star; the earliest stage of a stars life

A

Protostar

21
Q

The blue-white Hot core of a star that is left behind after its outer layers have expanded and drifted out into space

A

White dwarf

22
Q

The brilliant explosion of a dying supergiant star

A

Supernova

23
Q

A star formed from the remains after a supergiant explode

A

Neutron stars

24
Q

A rapidly spinning neutron star that sends out regular pulses of radio waves

A

Pulsars

25
Q

An object is gravity is so strong, but nothing pother not even light, can escape. The most massive stars become black holes when they die.

A

Black hole

26
Q

Star systems that have two stars

A

Binary stars

27
Q

I galaxy that appears to have a bulge in the middle and arms that spiral outward like pinwheels. The Milky Way galaxy is a spiral galaxy.

A

Spiral galaxies

28
Q

A galaxy that looks like a round or flat and ball. It contains billions of stars but have little gas and dust between the stars

A

Elliptical galaxies

29
Q

A galaxy that doesn’t have a regular shape. It is typically smaller than other types of galaxies.

A

Irregular galaxies

30
Q

And enormously bright, distant galaxy with a giant black hole at it center

A

Quasars

31
Q

A spiral galaxy with a bright line or bar of stars running through it

A

Barred spiral

32
Q

All of space and everything in it

A

Universe

33
Q

Away to write very large or very small numbers in a shorter form, by using the powers of 10

A

Scientific notation

34
Q

The initial explosion that resulted in the formation and development of the universe

A

Big Bang

35
Q

Describes the relationship between the distance to a galaxy and it’s speed. The further away a galaxy is, the faster it is moving away from us.

A

Hubbles law

36
Q

A large cloud of gas and dust such as the one that formed our solar system

A

Solar nebula

37
Q

One of the small astroid like the bodies that forms the building blocks of the planet

A

Planetesimals

38
Q

Matter that does not give off electromagnetic radiation but is quite abundant in the universe

A

Dark matter

39
Q

Mysterious force it appears to be causing the expansion of the universe to accelerate

A

Dark energy

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