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WorksheetsCAST Science Practice Test
Total questions: 20
Worksheet time: 10mins
Read the image description. What point in the graph represents the paramecium reaching carrying capacity?
A
B
Neither A nor B
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.
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
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
How many atoms make up CuSO4 ?
1
4
5
6
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
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
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
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
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.
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
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
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
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
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 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
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
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
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
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
