The Universe
a ____ occurs when one body( such as a planet, star etc) comes between two others, so that one is hidden from the other
Eclipse
This is a thin layer covering the earths surface and it’s least dense layer
The crust
The gaseous layer that surrounds earth
Atmosphere
The periodic rising and falling of the sea levels due to the gravitational pull of the moon
1) waves
2) amplitude
3) tides
4) crest
Tides
This is the most internal and densest layer of the geosphere. It is composed mostly of iron, although other metals such as nickel can be found. It is divided into two layers.
The core
Theory that explains one possible origin of the universe that it begin with a huge explosion 13,700 years ago
Big Bang Theory
Type of rock that is formed by transformation of other rocks subjected to high pressure conditions and / or temperatures without reaching a melting state
a) heterogenous rocks
b) igneous rocks
c) obsidian
d) metamorphic rocks
e) sedimentary rocks
D) Metamorphic
There are two categories Of pollutants, chemical and physical. Can you name an example of one of the three types of physical pollutants?
Electromagnetic radiation, noise, or radioactivity
Describes how a mineral reflects light
a) streak
b) transparency
c) color
d) lustre
Lustre
The phenomena by which the atomsphere retains some of the heat from the sun. In this way, it regulates the temperature of the earths surface, maintaining temperature levels adequate for life to exist.
a) the butterfly effect
b) the greenhouse effect
c) hole in the ozone layer
d) climate change
B) greenhouse effect
what we call the different imaginary shapes we see when looking at the stars
1) star patterns
2) constellations
3) concentrations
4) Galaxies
Constellations
Process that takes place after the water is lost and the salts form crystals. The crystals act like cement and stick the sediments together to form sedimentary rocks
a) cementation
b) compaction
c) metamorphosis
d) composition
A) Cementation
Ozone
a) is produced in the photosynthetic process that plants,algae and some bacteria carry out
b) is produced during the process of respiration, in combustion and in volcanic emissions
c) is the most abundant gas in the atmosphere, it does not react with other gases, this is why it's called an inert gas
d) is formed when oxygen is subjected to the action of ultraviolet radiation from the Sun or from electrical discharges from storms
Answer D
Describes how easily a mineral breaks
a) tenacity
b) mohs scale
c) cleavage
d) streak
Tenacity
Huge groups of stars,nebulae and interstellar dust and gas, held together by force of gravity
Galaxies
There are two different models for the universe,one that shows earth as the center of the universe as suggested by Aristotle, and another suggested by Aristarchus where the sun is fixed in the center and the other planets revolve around it. Name just one of the models
Heliocentric or geocentric.
Name at least 3 uses of rocks
cement, concrete, ceramics, glass, ornamental rocks, source of fossil fuels, source of minerals for technological use
Name 3 preventative measures listed from the book that you can take to reduce pollution.
Possible answers - Clean and purify, reduce emissions, encourage reforestation, reduce energy consumption, substitute traditional sources or non renewable energy sources, reduce the amount of residues and rubbish and reuse and recycle
The ____ ___ is over 200 million years old and is between 6 and 10 km thick. It forms the sea floor and is composed mostly of basaltic rock
Oceanic crust
Name all the layers of the atmosphere in order from top to bottom
Exosphere, thermosphere, mesosphere, stratosphere, troposphere
Name all the planets in order from outer planets towards the center sun
Saturn,Jupiter,Mars,Earth, Venus, Mercury
A mineral trait where they are composed of chemical elements that are always combined in the same proportion to create the same mineral
Definite chemical composition
A layer of the atmosphere that is between 12 and 15 km. The gases that form it move horizontally. The ozone layer which protects us from UV rays, is in this layer, at an altitude of 25 km. The temperature increases with altitude until it reaches 5 degrees Celsius.
a) exosphere
b) stratosphere
c) troposphere
D) Mesosphere
Stratosphere
The alteration of the normal composition of air due to the presence of forms of energy and particles of matter, which can be harmful for living things and the environment
Air pollution
What is the speed of light ?
300,000 km per second