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SA2: Warm-Ups

Last updated over 2 years ago
46 questions
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1

Earth has not always had an atmosphere rich in oxygen. How did we get our oxygen?

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Which atmosphere did we see the first signs of life? What evidence do we have that proves the existence of life at that time?

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20230125: It is a cold day. Draw a blue arrow to show the movement of cold air.

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20230125: It is a warm day. Draw a red arrow to show the movement of warm air.

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20230125: night time is causing a mountain breeze to form. Use a blue arrow to show the direction of wind movement.

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20230125: Day time is forming a valley breeze. Use a red arrow to show the direction of wind movement.

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20230130 Imagine you are drinking a cup of coffee and you add some sugar to your coffee. The coffee represents a solute.

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20230131 What factors affect solubility?

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20230201 What dissolves faster, the tablespoon of sugar or the sugar cube...why?

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20230202 - You are boiling two pots with the same amount of water, and you add salt to one pot. Which pot will boil first, and why?

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20230206 - Provide a few examples of acids and bases that we use in our daily lives.

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Identify each compound as soluble or insoluble.

NaBr is __________
Ag2CO3 is __________
PbSO4 is __________
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What is the net ionic equation for the following reaction?

2AgNO3(aq) + CaCl2(aq) -> 2AgCl(s) and Ca(NO3)2(aq)

_________ +______________________ -> __________
Other Answer Choices:
2Cl-
2Ag+
Ca(NO3)2
2AgCl
2NO3-
Ca2+
1
Using the Acid-Base Strength Chart, identify if the following compounds are strong or weak.

HNO3 = __________
SO4- = __________
OH- = __________
HCO3 = __________
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20230210 - The most common method for describing the strength of an acid or base is known as the pH scale.
A substance with a pH of 7, like water, is _______.
A substance with a pH of 13 is _______.
A substance with a pH of 2 is _______.
1
In a neutralization reaction, an _________ reacts with a _________ and produce a _________ and __________. This will result in a neutral solution.
Other Answer Choices:
water
acid
base
sugar
heat
salt
CO2
Required
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In your own words, explain what equilibrium is.

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For the following reaction, complete the equilibrium constant, or Keq.

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Reactant/Product
If a reactant is added to a system, equilibrium shifts towards the __________.

Temperature
Increasing the temperature __________ energy to the system, shifting equilibrium of this reaction in the __________ direction.

Pressure & Volume
If a reaction at equilibrium experiences an increase in pressure or a decrease in volume, it shifts in the direction with __________.
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20230224 - What are the five factors that influence reaction rate? And give an example of one and how we modeled that change in class.

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20230228 - How does the ocean water participate in the water cycle?

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20230301 - How does the temperature of ocean water change in relation to water depth, and why?

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Phytoplankton (algae and photosynthetic bacteria) play an important role in the carbon cycle, as they conduct most of the photosynthesis that occurs on our planet.

A) Write the chemical formula for photosynthesis.
B) Tell me where phytoplankton will get carbon dioxide. (CO2)

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An observer is watching ocean waves from a lighthouse. He measures them carefully and finds that the distance between wave crests is 18 meters. A new wave crest passes his lighthouse every 3 seconds. What is the wave speed?

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Label where in the picture we will see maximum potential energy (PEmax) and maximum kinetic energy (KEmax)

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Gravitational Potential Energy is energy stored due to position in a gravitational field, commonly due to Earth's gravity.
What is the equation for calculating gravitational potential energy?

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20230315 - Elastic potential energy is energy stored in an object due to stress or compression, like drawing a bow or compressing a string. The following equation can be used to find the potential energy of a spring.


Suppose a jack-in-the-box has a spring constant of 80 N/m. How much elastic potential energy is stored in the jack-in-the-box if its spring is compressed 10 cm?

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20230316 - Electric Potential Energy is the total potential energy of a charged particle. \


Where PEelec is the electric potential energy, q1 and q2 are the charges, r is the distance between the charges, and k is the coulomb constant 8.99 x 109 N•m2/C2.

Set up the equation to find the electric potential energy for two particles with a charge of 35 μC and -20 μC that are 0.023 m apart.

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What is the kinetic energy of a ball that is 670 g and moving at a speed of 24 m/s.

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Electric and magnetic forces are everywhere. How do they create the spectacular light shows known as the northern lights?

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  • If the system is the cup of coffee, the environment is a room, the change in entropy in the system will be ...
  • The change in entropy for this sytem (ice water) on a warm day will be...
  • Positive
  • Negative
  • No change
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What is the photoelectric effect?
In explaining the photoelectric effect, Einstein said what about light?

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What do we see happen when we run a magnet through a copper wire coil. How does the length of this coil impact the magnitude of this phenomenon?

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What is the difference between a conductor and an insulator. Give examples of substances of both a conductor and insulator.

DE_Phys_4.1_Nuclear Physics
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20230328: What does it mean to say that an element is radioactive?

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20230330: What is the difference between nuclear fusion and nuclear fission?

DE_LE_4.1_Genetics
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In Mendel's Pea Plants, one of the traits they observed were pea shape. Represented with the letter R and r, Mendel discovered that peas can either be round or wrinkled in shape. With the image above, identify the genotype and phenotype for the following allele combinations.

Allele Combination | Genotype | Phenotype
Homozygous Dominant _______ __________
Heterozygous _______ __________
Homozygous Recessive _______ _____________
Other Answer Choices:
Wrinkled
RR
Wrinkled
rr
Round
Round
Rr
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Aside from homozygous dominant/recessive genotypes/phenotypes, what other factors (we talked about them yesterday) can affect phenotype?

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What do you already know about DNA?

DE_LE_Unit5
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20230504 - What are cells and why are they important for life?

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20230508 - Match the organelle with one of its functions

Draggable itemCorresponding Item
Lysosome
Contains genetic material
Chloroplast
Convert chemical energy obtained from food into energy-rich compounds
Mitochondria
Produces sugars and starches via photosynthesis
Nucleus
Responsible for movement of materials into and out of the cell
Ribosomes
Reads RNA to combine amino acids to produce proteins
Golgi Apparatus
Contains digestive enzymes to break down excess cell parts
Peroxisome
Breaks down toxins in cell
Plasma Membrane
Post-translation modification site of proteins, lipids and hormones
Endoplasmic Reticulum
Site of packaging, folding and delivery of proteins, lipid synthesis and Ca+ ion storage.
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20200509 - Write the name of each structure shown in the image.


A: _______
B: _______
C: _______
D: _______
E: _______
G: _______
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20230510 - Most adult cells are not ______________________ . This is because progression through the cell cycle is ______________________ to prevent uncontrolled growth. Exposure to ______________________ can damage cells by altering, or mutating, their DNA. Mutations can then lead to the transformation of normal cells to ______________________ . Many cancer cells do not require external factors like particular nutrients and temperature controls in order to divide. They avoid programmed cell death (______________________ ), begin to grow quickly, and form ______________________ .
Other Answer Choices:
mutagens
rapidly dividing
regulated
cancer cells
apoptosis
tumor
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20230511 - Match the type of asexual reproduction with the correct image.

Draggable itemCorresponding Item
Budding
Fragmentation
Spore
Binary Fission
Parthenogenesis
Propagation
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20230512 - Categorize the following statements into either Mitosis or Meiosis.

  • Crossing over occurs
  • Cells are diploid
  • Cells are haploid
  • Divides cells twice
  • Daughter cells genetically identical to parent cell
  • Divides cells once
  • Develops gametes
  • Develops somatic cells
  • No crossing over occurs
  • Daughter cells genetically different from parent cell
  • Mitosis
  • Meiosis
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20230515 - Fertilization is the fusion of an _______ (female organisms) with a _______ (male organisms). A protective layer containing binding sites surrounds the egg. _______ from the sperm head break down the egg's protective layer. Inside the egg, the sperm's _______ disappears and the chromatin decondenses. The genomes of the two haploid cells (N) fuse to form a single _______ cell (2N).