Science finals 🔚🎬 Flashcards
Physical properties of minerals such as color, hardness, luster, and streak are used to determine what about a mineral?
Identity
One test of a mineral is the streak test in which what property is determined?
The color of powder left behind when the mineral is rubbed on a surface
Which of the following best describes luster?
The way light reflects off an object
Scientists test for the hardness of a mineral by doing which of the following?
Scratching the mineral against other substances of known hardness
Rocks are classified by…
How they are formed
What is the primary process that turns sediments into sedimentary rocks?
Upper layers of sediment, pressing down on lower layers of deposited sediment
In order for a rock to be classified as igneous, what must have happened during its formation?
Liquid rock changing its physical state
Geologists might recognize a metamorphic rock by distorted, wavy layers because they were caused by…
Pressure and heat
Sedimentary rocks can have layers of different colors. This occurs when…
different minerals are deposited at different times.
Which layer of Earth is the thinnest?
Crust
Which layer of Earth do scientists believe is most likely made of solid metals?
Inner core
Which of the following would be an accurate feature to include in a model of Earth?
A liquid outer core below the mantle
Which of the following best describes Earth’s asthenosphere?
Dense rock that moves the crust
Which layer of Earth is broken up into giant moving plates?
Lithosphere
Where two tectonic plates converge and move toward each other, which of the following is likely to result?
Mountain range
When two continental plates diverge, there is a valley in between these two plates that forms as the continental crust widens. What geological event is a result of this interaction?
Volcanos 🌋
Density is calculated by dividing the mass of a substance by its…
Volume
All of the following are evidence of a chemical change EXCEPT
Change in state of matter
While elements and compounds are related, they are different. Unlike elements, compounds -
are made of at least two types of matter
Be3Al2(SiO3)6
How many different elements
4
Which of the following is the best description of an element?
A substance that cannot be broken down into simpler substances
What physical properties are used to classify elements as metals, non-metals, or metalloids?
Luster, conductivity, malleability
Thermal energy transfer by conduction is accomplished when heat moves from a warmer object to a cooler one by –
coming in direct physical contact with it.
Which of the following is an example of heat transfer through radiation?
Beach sand getting warmed by the Sun
Which of these is an example of light energy being transformed into chemical energy?
A plant makes sugar in the sunlight
If a community is choosing between solar and wind energy, which advantage would make wind energy the better option?
Wind energy is less expensive, and it is limitless
One disadvantage to using coal to produce electricity is that coal -
is not environmentally friendly.
Natural gas is a fossil fuel formed within oil fields and coal beds. What is an advantage of using natural gas as an alternative form of energy?
It releases relatively low emissions compared to other fossil fuels
Why is it better to obtain energy from natural gas instead of coal and oil? Natural gas –
produces fewer greenhouse gases.
One advantage of using biomass as a renewable energy source is that biomass –
decreases waste products from municipal and agricultural sources.
What would be a potential problem when collecting wind energy?
Wind is unpredictable
Human beings share some characteristics with all other organisms. Humans, and all other living things…
are made up of one or more cells.
At what level of organization in an ecosystem is an individual plant or animal?
Organism
Community is the level of organization which is best described as all -
living things, regardless of species, in an area.
Which of the following lists includes only abiotic factors?
Rainfall amounts, average daily temperature, minerals in soil
What is abiotic?
Non living things
Which of the following describes a change in a biotic factor that will be a disadvantage for a certain species of fish living around coral reefs in shallow seas?
The number of predators, such as sharks, increases dramatically
