definitions and terms Flashcards

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1
Q

what is “any natural object that is found in space?

A

celestial bodies

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2
Q

one of 88 officially defined areas of the sky in which an asterism forms a perceived outline or pattern.

A

constellation

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3
Q

what is “any pattern formed by relatively bright stars that appear close to one another”

A

Asterism

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4
Q

what is “a regularly repeating path that one object in space takes around another.”

A

Orbit

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5
Q

the object’s orbital motion around another object. For example, Earth revolves around the Sun.

A

Revolution

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6
Q

an object’s spinning motion about its own axis.

A

Rotation

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7
Q

what is “Using one of the senses (sight, hearing, touch, etc.) or measurement tools to gather information? Observations are necessary to collect and record data, which helps us to develop and then test hypotheses and theories.”

A

Observation

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8
Q

a star located at the centre of our solar system.

A

the sun

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9
Q

a sphere of burning hot gases (hydrogen and helium).

A

a star

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10
Q

what is “consists of at least one star and all the celestial bodies that orbit it”.

A

solar system

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11
Q

the cooler spots of the sun

A

sunspots

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12
Q

what is “Enormous loops of hot gas that extend out from Sunspots and if one snaps it can make a solar flare!”.

A

Solar prominences.

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13
Q

Rapid and violent eruptions on the Sun`s surface measure up to 11 million oC! They release large amounts of both solar radiation AND solar wind. solar flares

A

solar flares

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14
Q

what is “A stream of high-energy gas particles that is constantly being sent into the solar system from the Sun. The solar wind increases when the Sun is more active and when solar flares occur. “

A

Solar wind

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15
Q

what is “a thin layer of ozone gas that absorbs most of the harmful radiation from the Sun known as ultraviolet radiation”

A

Ozone layer

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16
Q

caused by the movement of the earth’s iron core, this field surrounds the earth and blocks much of the solar wind. magnetic field

A

magnetic field

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17
Q

what is “Scientists use this to describe large distances within our solar system.”

A

Astronomical units (AU)

18
Q

has to Orbit one or more stars and Has a spherical shape due to its own massive gravity.
it also Has cleared its orbit of debris.

A

planets

19
Q

what is “ a type of planet that is closer to the sun, has shorter orbits, the planets are warmer and are smaller than the other planets. It is also dense and is made primarily of rocks. They rotate slower than the other planets.”

A

Terrestrial planets.

20
Q

these planets are farther from the sun and have longer orbits, the planets are colder and less dense. They are primarily made up of gasses and have a faster rotation than other planets.

A

Jovian planets

21
Q

what is “ planets that Orbit the Sun, are mostly spherical, BUT have not cleared their orbits of debris.”

A

Dwarf planets

22
Q

small, rocky celestial bodies that are remains of the formation of the solar system.

A

Asteroids

23
Q

what is “the visible trail of a space rock as it burns up in the atmosphere.”

A

Meteors

24
Q

what is “ pieces of asteroids that hit the Earth’s surface.”

A

Meteorites

25
Q

Places on Earth or other celestial bodies where meteorites have landed.

A

impact crater

26
Q

Often referred to as “dirty snowballs” composed mainly of ice, rock and gas. comets

A

comets

27
Q

what is “an area of our solar system beyond Neptune”

A

Kuiper belt

28
Q

what is “a large, sparse area of ice and dust that surrounds the sun”

A

Oort cloud

29
Q

a variable that is changed

A

independent variable

30
Q

a variable that is affected by the change

A

dependent variable

31
Q

everything u want to remain constant and unchanging.

A

controlled variable

32
Q

what is “ A comet that orbits the sun in less than 200 years.”

A

a short period comet

33
Q

what is “A comet that orbits the sun in more than 200 years or more…. up to a million years!

A

a long period comet

34
Q

the large round object that circles the Earth and that shines at night by reflecting light from the sun.

A

moon

35
Q

When charged particles strike our magnetic field they can cause auroras at the north and south poles.

A

Aurora

36
Q

what is “the earth is considered as the center of the universe, and all celestial bodies move around the earth (planets, moon, sun and the stars).

A

Geocentric model

37
Q

what is “the sun is considered as the center of the universe, and the celestial bodies move around the sun.”

A

heliocentric model

38
Q

what is “a small circle whose center moves around the circumference of a larger one.”

A

Epicycles

39
Q

a flattened circle or oval.

Sentences: Earth’s orbit around the sun is in the shape of an ________.

A

ellipse

40
Q

a tool that astronomers use to see faraway objects

A

telescope

41
Q

the force by which a planet or other body draws objects toward its center.

A

gravity