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WorksheetsCAST practice #2
Total questions: 77
Worksheet time: 1hrs 7mins
Use the graphs and the partial food web to predict the changes in the sea urchin population as the kelp pupulation INCREASES. What will happen to the sea urchin population?
Sea urchin population increases
Sea urchin population decreases
Sea urchin population remains steady
Use the graphs and the partial food web to predict the changes in the kelp population as the kelp pupulation INCREASES. What will happen to the kelp population?
Kelp population increases
Kelp population decreases
Kelp population remains steady
A student conducts 5 trials to investigate factors affecting the formation of impact craters. The student drops a marble into a box with fine powder. Analyze the results in the graph pictured. Because the mass is 40g in each trial, mass is a...
constant
control
dependent variable
independent variable
A student conducts 5 trials to investigate factors affecting the formation of impact craters. The student drops a marble into a box with fine powder to measure the depth. Analyze the results in the graph pictured. Depth is the
constant
control
dependent variable
independent variable
A student conducts 5 trials to investigate factors affecting the formation of impact craters. The student drops a marble into a box with fine powder at different speeds to measure the depth. Analyze the results in the graph pictured. Speed is the
constant
control
dependent variable
independent variable
A student conducts 5 trials to investigate factors affecting the formation of impact craters and here are the results. What is true about the results of the experiment?
As the speed of the marble increases, the depth of the crater increases
As the speed of the marble increases, the depth of the crater decreases
As the speed of the marble increases, the depth of the crater stays the same
A student conducts 5 trials to investigate factors affecting the formation of impact craters and here are the results. Which statement BEST describes the results of the investigation?
The kinetic energy of the marble just before impact is proportional to the depth of the crater it forms
The kinetic energy of the marble just before impact is proportional to the mass of the marble
The depth of the crater is proportional to the mass of the marble
The depth of the crater is proportional to the mass of the marble
Read the question in the photo. Select a moon location in the model that supports the explanation that the New Moon phase explains why the disk becomes a ring.
1
2
3
4
A student reviews the model shown and says that, based on the model, a solar eclipse should happen every time there is a new moon. However, solar eclipses occur less often than New Moons. Which feature of the model should be revised to best explain why solar eclipses do not happen every month?
The model should show that the shape of the Earth's orbit around the Sun is an ellipse.
The model should show that the shape of the Moon's orbit around the Earth is an ellipse.
The model should show that Earth's equator is inclined relative to the plane of Earth's orbit around the Sun.
The model should show that the plane of the Moon's orbit around the Earth is inclined relative to the plane of Earth's orbit around the Sun.
Leah is learning to use properties of substances to identify a chemical reaction. She conducts two trials. In the first trial, she pours silicon dioxide (SiO2) into water (H2O). For the second trial, she pours silver nitrate (AgNO3) solution into a test tube with a solution of potassium chloride (KCl). Look at the diagram. In which trial did a chemical reaction occur?
Trial 1
Trial 2
Both trial 1 and trial 2
No chemical reaction happened in either
Leah is learning to use properties of substances to identify a chemical reaction. She conducts two trials. In the first trial, she pours silicon dioxide (SiO2) into water (H2O). For the second trial, she pours silver nitrate (AgNO3) solution into a test tube with a solution of potassium chloride (KCl). Look at the diagram. Leah knows a chemical reaction occurred in Trial 2 because
a substance with a new properties was made (new white solid)
the same substances remained
Leah records properties of the substances she mixed before and after the trials. Which property or properties show that a chemical reaction occurred?
State of matter ONLY
Mass
Color ONLY
Both state of matter and color
Leah made a model of the reaction between Iron and Copper Sulfate. However, it needs improvements. Which statement best describes which improvements need to be made?
The mass of the reactants does not equal the mass of the products.
The number of atoms for the reactants is different than the products
The number of atoms for the reactants is the same as the products
The composition of atoms for the reactants is different than the products
Which model shows a balanced chemical reaction?
According to this model, Fe, or Iron, is represented by
According to this model, what are the products made from the chemical reaction?
Fe
CuSO4
Cu
FeSO4
How many atoms make up CuSO4 ?
1
4
5
6
According to this "Key" that models atoms and molecules, the molecules are
Fe and CuSO4
FeSO4 and CuSO4
Fe and Cu
Cu and CuSO4
Leah combined Fe and CuSO4 and measured the masses before and after a reaction. What is the total mass of the reactants?
96 grams
25 grams
71 grams
192 grams
Leah combined Fe and CuSO4 and measured the masses before and after a reaction. What is TRUE about the total mass of the reactants and the total mass of the products?
They are the same (96 grams)
They are different
Leah conducts an investigation by mixing Fe with CuSO4 and makes a model to help explain why the total mass did not change. Leah's model can also be used to show that a chemical reaction occurred because the products
are the same size as the reactants
have the same composition as the reactants
are at different states of matter compared to the reactants
have differently arranged atoms compared to the reactants
Which model correctly shows that the mass is conserved in the reaction?
Which model correctly shows that the mass is conserved in the reaction?
In this equation, the reactants are on the
left of the arrow
right of the arrow
In this equation, the products are on the
left of the arrow
right of the arrow
Because this model shows atoms connected by a chemical bond, you are looking at
atoms
single elements
molecules or compounds
After the predator is introduced, which fish has a BETTER chance of surviving?
light colored fish
dark colored fish
both light and dark have the same chance of surviving
Why would the dark colored fish have a better chance of surviving after the new predator is introduced?
The predator can move faster than this species of small fish
The predator cannot see them as well as the fish of the light color
The predator predicts where each fish will be
Students are asked to make a claim about which design will be both break-resistant and keep the water hot for the longest time. Which claim best meets the two criteria?
Bottle 1: It has an unbreakable steel lining.
Bottle 2: It has a glass inner lining which is a better insulator
Bottle 3: It has an unbreakable steel inner lining and a foam cover that will keep the water hot for the longest time.
Bottle 3: It has glass inner lining and a foam cover that will keep the water hot for the longest time.
Choose a claim that best agrees with the data.
Mass does not affect the gravitational force between two objects
Mass is the only variable that affects the gravitational force between two objects
Distance is the only variable that affects the gravitational force between two objects
Both mass and distance are variables that affect the gravitational force between two objects.
MATH REVIEW (EXPONENTS): Which is bigger?
2.6 x 10-9
6.5 x 10-10
1.0 x 10-8
This graph shows almond production in the US since 2012. What is true about the graph?
Almond production has increased from 2014-2017
Almond production has decreased from 2014-2017
Almond production has stayed the same from 2014-2017
Read the image description. What point in the graph represents rapid growth?
A
B
Neither A nor B
Read the image description. What point in the graph represents the paramecium reaching carrying capacity?
A
B
Neither A nor B
Based on this information, which earthquake has the GREATEST likelihood of causing a tsunami to develop?
Earthquake A
Earthquake B
Earthquake C
Earthquake D
A student wants to show a friend that a magnetic field exists in the region around a permanent magnet. Which demonstration shows that a field exists?
A magnet touches a paper clip and picks it up from the table
A magnet is held near a small metal ball, making it roll across the table
A student wants to show a friend that a magnetic field exists in the region around a permanent magnet. Which demonstration shows that a field exists?
The north pole of a magnet sticks to the south pole of the second magnet when they touch
A small magnet held under a piece of paper with iron filings on top makes the filings move into a pattern that covers the whole piece of paper
What TWO things are true about PLANTS?
Produce CO2 that is used in photosynthesis
Use CO2 in photosynthesis
Produce O2 that is used in cell respiration
Use O2 in cell respiration
What TWO things are true about ANIMALS?
Produce CO2 that is used in photosynthesis
Use CO2 in photosynthesis
Produce O2 that is used in cell respiration
Use O2 in cell respiration
The student proposes to test the claim in the lab by using metal rods made of Iron, Copper, and Aluminum. In addition to metal rods, which pieces of equipment would be useful for investigating their claim?
prism, heat lamp, screen, meterstick
beaker, digital scale, stopwatch, clamps
litmus paper, beaker, pan balance, battery
hot water, pan to hold water, stopwatch, thermometer
Which statement describes the most likely impact of the mutation in the mutated sequence?
There will be no effect because the rest of the DNA is normal
The extra nucleotide will be deleted before the protein is formed
The protein formed will not be the same as that formed from the original DNA
The mutated DNA will code for the same number of amino acids as the original sequence
Students want to determine what effect the eruption had on global climate. Which question should the students investigate to BEST determine the effect?
What was the temperature of the laba that flowed onto Earth's surface when Mount Pinatubo erupted?
Was the amount of rain that fell on Mount Punatubo in the days after the eruption greater or less than average?
Do aerosol particles of this type cause the amount of solar energy that reaches the Earth's surface to increase or decrease?
According to the graph, what evidence is true about the rate of photosynthesis during a La Nina event?
During a La Nina event, the light intensity is reduced (as more clouds block sunlight), therefore reducing CO2 uptake and slowing down the rate of photosynthesis.
During a La Nina event, the light intensity is increased, therefore increasing CO2 uptake and increasing the rate of photosynthesis.
During a La Nina event, the light intensity stays the same, therefore reducing CO2 uptake and not changing the rate of photosynthesis.
Which evidence could be used to CHALLENGE a biologist's claim that purple flowers attract more pollinators than other flower colors do?
The purple flowers did not have any butterfly or beetle pollinators
Bees pollinated the purple flowers 12 times and white flowers only 1 time
The purple flowers were pollinated 17 times, the white flowers 3 times, and pink flowers 2 times.
Which wave characteristics (if any) does the energy of a wave depend on?
the amplitude ONLY
the wavelength ONLY
BOTH the amplitude and wavelength
NEITHER the amplitude and wavelength
Adding garden lime REDUCES acidity of the soil. Based on the data, if someone adds lime juice to neutral soil over time, what will happen to the acidity of the soil?
it becomes more basic
it becomes more acidic
it stays neutral
Adding garden lime REDUCES acidity of the soil. Based on the data, if someone adds lime juice to neutral soil over time, what color will hydrangea flowers become?
blue
purple
pink
What statement is most likely correct?
Layer C is below Layer B, so Layer C is older
Layer D is younger than Layer C
Layer A is the oldest layer
What statement is most likely correct?
There is no coral fossil in Layer D, so it went completely extinct
Layer D is younger than Layer C
Layer A is the youngest layer because it is at the top
What statement is most likely correct?
There is no coral fossil in Layer D, so it went completely extinct
The gastropod fossils are above the crinoid fossil so they for sure evolved from crinoids
The ammonite fossil is above the crinoid fossil, so the crinoid fossil is older
Which best explains why the embyos are similar in appearance, yet the adults look different?
Pigs and chickens are in the same genus
All vertebrate embryos have the same DNA
As the embryos grow, they undergo mutations
Some developmental processes are shared by vertebrates
According to the data table, which type of plastic can help conserve natural resources?
Plastic A
Plastic B
Neither Plastic A or Plastic B
Based on this data, what statement is most likely correct?
The height of the plants is most directly controlled by genetic factors
The height of the plants is most directly controlled by environmental factors
Based on this data, what statement is most likely correct?
Near sea level, the taller plants are better able to survive and reproduce than the shorter plants
At higher elevations, the taller plants are better able to survive and reproduce than the shorter plants
Which model correctly represents the correct number of CO2 and H2O molecules produced if mass is conserved?
Based on the model, what should the student say about the role of living organisms in the water cycle?
Plants help move water from the soil to the atmosphere
Animals generate heat that helps evaporate water from the land
Plant movements create wind that helps draw water into the atmosphere
Animals create pathways in the mountains that allow water to flow downhill
Why might introducing a new fish be a bigger problem than the invasive plant species?
The fish might cause a decrease in the number of native, beneficial plants
The fish might cause an increase in the number of native, beneficial plants
The fish might attract fisherman to the lake
What is the primary reason that a solar eclipse does not occur every month?
The Moon's orbit is elliptical, causing variations in distance from Earth.
The Earth's orbit around the Sun is elliptical, affecting the alignment.
The plane of the Moon's orbit is inclined relative to the Earth's orbit around the Sun.
The Earth's equator is inclined relative to the plane of its orbit around the Sun.
Which factor is most likely to affect the depth of impact craters in an experiment?
The size of the marble used in the experiment.
The speed at which the marble is dropped.
The type of powder used in the box.
The color of the marble used in the experiment.
What evidence would best support the claim that a chemical reaction has occurred?
The reactants and products have the same chemical composition.
The mass of the reactants is greater than the mass of the products.
The products have a different state of matter compared to the reactants.
The temperature of the reactants is higher than that of the products.
It is important to read the directions completely. For example, your direction right now is choose FALSE
TRUE
FALSE
How should you first approach a multiple-choice question?
Read the choices out loud
Eliminate the longest and shortest choices
Try to answer it without looking at the choices
Try to answer it without looking at the question
A multiple choice test has four choices. You know that two of them are definitely wrong. Therefore, you have a ___ chance of getting the question right,
25%
50%
75%
100%
Which of the following is NOT an effective test-taking strategy?
Process of elimination
Don't overthink and ignore an obvious answer
Don't panic and budget time wisely
Guess without reading all of the answers
Which of the following is a good multiple-choice strategy?
Guess randomly without reading the question or answers.
Choose the longest answer choice.
Select the first answer choice that seems correct without considering the others.
Eliminate obviously wrong answers first, then carefully consider the remaining options before selecting the best answer.
What is a recommended multiple-choice strategy?
Select the first option
Choose the longest option
Guess randomly
Use the process of elimination to narrow down the choices.
What is the benefit of reading directions carefully before starting a test?
It helps you understand the requirements and avoid mistakes.
It allows you to finish the test faster.
It gives you extra time to think about the answers.
It makes the test more challenging.
What can you often identify even if you don't know the correct answer?
You often know which answers are wrong.
You can always guess the right answer.
You can eliminate all options confidently.
You can identify the question type easily.
How can staying calm during a test affect your performance?
It helps you think clearly and reduces anxiety.
It makes you more nervous and distracted.
It allows you to finish the test faster.
It has no effect on your performance.
What should you do if you finish a test early?
Use the extra time to review your answers.
Submit the test immediately.
Leave the test room quietly.
Start working on the next test.
What does it mean to eliminate wrong answers in multiple choice questions?
It increases your chances of selecting the correct answer.
It makes the question easier to understand.
It allows you to guess more freely.
It reduces the time needed to answer the question.
What should you do when you encounter a difficult multiple choice question?
Answer it immediately without thinking
Skip it and come back to it later.
Choose the first option you see
Guess randomly and move on
How can practicing with sample tests improve your test-taking skills?
It familiarizes you with the format and types of questions.
It allows you to guess answers more effectively.
It reduces the need for studying.
It increases your anxiety during the test.
What should you do at the end of your test?
Review your notes.
Check your answers.
Leave the room immediately.
Start a new test.
What strategy can help you manage time during a test?
Skip difficult questions and return to them later.
Answer all questions in the order they appear.
Spend extra time on the first few questions.
Only answer questions you are confident about.
What is a common mistake students make during tests?
Taking too much time on each question.
Rushing through questions without checking their work.
Reading the questions too quickly.
Ignoring the instructions provided.
What role does practice play in improving test-taking skills?
It has no effect on test-taking skills.
Regular practice helps build confidence and familiarity with test formats.
Practice only helps with memorization.
Practice can lead to increased anxiety during tests.
