CHEMISTRY
Which element has a melting point of 1,287 °C?
Nitrogen trifluoride
Beryllium
H₂SO₄
Manganese
Br
2) Beryllium
(TRUE OR FALSE) The earth’s northern hemisphere faces closest to the sun during winter
False
(TRUE OR FALSE) Animal cells and plant cells can be differentiated because animal cells have a cell wall but plant cells do not
False
Telescopes, camera, flash lights and binoculars are all examples of what lens?
Concave Lens
(TRUE OR FALSE) Ice melting into water is a physical change
True
How does the earth’s atmosphere absorb solar radiation?
through sun panels / UV rays
through ozone, water vapor and dust
through greenhouse gases and fossil fuels
light and colour absorbs the radiation
2) through ozone, water vapor and dust
What is the purpose and name of two cells found near the stomach?
parietal cells increase the efficiency of pepsin- produced by chief cells to break down large protein molecules into peptides.
(TRUE OR FALSE) light travels in straight lines
True
Name all metalloids that contain 5 electrons on the outer shell of their Bohr-Rutherford Diagram
Arsenic and Antimony
What is the number one way that human’s have affected the increase in carbon emissions and how?
Transportation and through fossil fuels / gas (coal emits ash particles into the air, adding to air pollution)
How does blood move through the circulatory system?
Blood moves through the circulatory system through arteries and veins- that are connected through capillaries. Arteries carry blood away from the heart while veins carry blood back to the heart.
What is the difference between specular vs a diffused reflection?
specular reflections reflect off of smooth and give off parallel rays. diffused reflections reflect off of rough or dull surfaces and give off rays in all different directions.
From _______ to ________ there are ___ transition metals, this is because most have a ____ ____ and _____ point, _____ density and are _____ at conducting ______.
From Scandium to Hassium, there are 34 transition metals, this is because most have a high melting and boiling point, high density and are good at conducting heat.
What is the difference between anthropogenic and natural climate change?
anthropogenic climate change is caused by humans (ex. fossil fuels, deforestation, melting ice sheets) and natural climate change is anything naturally caused by nature (ex. earthquakes, volcano eruption, orbital changes)
What is the purpose and appearance of the Golgi apparatus?
To take proteins from the endoplasmic reticulum and organize them to move throughout the cell. The golgi has a condensed oval shaped with a surface area that looks like a condensed collection of balloons (second answer may very, but as long as it’s accurately describing the cell, it’s correct)
when light bends between two substances it is called ________. For example, a pencil will appear _______ and _____ after being dipped in water.
when light bends between two substances it is called refraction. For example, a pencil will appear bigger and bent after being dipped in water
Balance this equation: SO2 + Li2Se → SSe2 + Li2O
1 SO2 + 2 Li2Se → 1 SSe2 + 2 Li2O
If Earth’s _________ goes ____ by 2º; access to ____ will be limited, melting glaciers will go from one every ______ year(s) to one every ____ year(s) and sea levels will rise to ______ in 2100.
If Earth’s temperature goes up by 2º; access to water will be limited, melting glaciers will go from one every 100 year(s) to one every 10 year(s) and sea levels will rise to 46cm in 2100.
Metaphase is the process of:
spindle fibers connecting to the centriole while the nucleus and nuclear membrane dissolve
when the nucleus begins to divide and the genetic material of the cell begins to replicate
when the cells finally divide; with cellulose forming in plant cells and when the cell membrane shows in animal cells
the spindle fibers begin to lengthen, attach to centrids when in animal cells and the chromatids begin to separate at the centromere
when the chromatids separate/become chromosomes as fibers shorts
4) the spindle fibers begin to lengthen, attach to centrids when in animal cells and the chromatids begin to separate at the centromere
The electromagnetic spectrum is
a way to organize forms of light from least to most energy
a way to organize forms of light only visible to the eye
an object used to break white light into the colours of the rainbow
a way to tell between forms of light that do produce their own light vs forms that don’t
1) a way to organize forms of light from least to most energy