TFA Science

Question 1

Cosmology

Answer 1

The science of the origin and development of the universe

Question 2

Universe

Answer 2

Everything in space considered as a whole

Question 3

Big Bang Theory

Answer 3

A theory on how the universe began

Question 4

Emission Spectrum

Answer 4

A spectrum of the electromagnetic radiation emitted by a source

Question 5

Apparatus

Answer 5

A piece of equipment used for recording and measuring spectra

Question 6

Wavelength

Answer 6

Distance between the crests of the wave

Question 7

Frequency

Answer 7

The number of waves that pass a point in space

Question 8

Expansion

Answer 8

The action of becoming larger or more extensive

Question 9

Contraction

Answer 9

The process of becoming smaller

Question 10

Galaxy

Answer 10

A system of a lot of stars and planets

Question 11

Interstellar Cloud

Answer 11

An accumulation of gas

Question 12

Red Shift

Answer 12

The displacement of spectral lines toward longer wavelengths

Question 13

Blue Shift

Answer 13

The displacement of the spectrum to shorter wavelengths in the light coming from a distance

Question 14

Doppler Effect

Answer 14

An increase or decrease in the frequency of sound, light, or any other waves

Question 15

Newton’s Law of Universal Gravitation

Answer 15

When any particle attracts with any other particle in the universe with force.

Question 16

Plasma

Answer 16

The colorless fluid part of blood

Question 17

Solar System

Answer 17

8 planets the sun and the moon

Question 18

Absorption Spectrum

Answer 18

A spectrum of electromagnetic radiation transmitted through a substance

Question 19

Solar Nebula

Answer 19

A large cloud of gas and dust from which the sun, planets, and other solar system bodies formed.

Question 20

Gravity

Answer 20

The force that attracts a body toward the center of the earth

Question 21

Star

Answer 21

A fixed luminous point in the night sky which is a large

Question 22

Infrared light

Answer 22

An electromagnetic radiation with wavelengths longer than those of visible light

Question 23

Visible Light

Answer 23

The portion of the electromagnetic spectrum that is visible to the human eye

Question 24

Ultraviolet Light

Answer 24

A radiation with wavelength from 10 nm to 400 nm

Question 25

Planetary Nebula

Answer 25

A ring shaped nebula formed by an expanding shell of gas around an aging star.

Question 26

White Dwarf

Answer 26

A small very dense star that is typically the size of a planet

Question 27

Red Giant

Answer 27

A luminous giant star of low or intermediate mass in a late phase of stellar evolution

Question 28

Main Sequence Star

Answer 28

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness

Question 29

Element

Answer 29

A part or aspect of something abstract

Question 30

Hydrogen

Answer 30

Highly flammable gas or the chemical element of atomic number 1.

Question 31

Helium

Answer 31

A chemical element with the symbol He and atomic number 2.

Question 32

Proton

Answer 32

A stable subatomic particle occurring in all atomic nuclei

Question 33

Neutron

Answer 33

A subatomic particle of about the same mass as a proton but without an electric charge

Question 34

Nucleus

Answer 34

The central and most important part of an object