WorksheetsIntegrated Science Midterm Practice
Total questions: 37
Worksheet time: 19mins
Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below. What is the outcome variable (dependent variable) in this experiment?
The number of bubbles produced
The type of plant placed in the beaker
The amount of time the bubbles were counted
The distance of the light source from the plant
Pat has two kinds of plant food, “Quickgrow” and “Supergrow”. What would be the best way for Pat to find out which plant food helps a particular type of houseplant grow the most?
Put some Quickgrow on a plant in the living room put some Supergrow on a plant of the same type in the bedroom, and see which one grows the most.
Find out how much each kind of plant food costs, because the most expensive kind is probably better for growing plants.
Put some Quickgrow on a few plants, put the same amount of Supergrow on a few other plants of the same type, put all plants in the same place, and see which group of plants grow the best.
Look at the advertisements for Quickgrow and Supergrow to see which one says it helps plants grow the most.
Jenny was conducting an experiment in her science lab and mixed several chemicals. She wrote down the first three chemicals she added, but she was interrupted and forgot to write down the last two chemicals that were part of the solution. What impact will this have on her results?
Her teacher will value the results of her experiment regardless of her notes
The results of her experiment will be valid as long as she gets the expected results
If her records are not accurate, then her results will be inconclusive and unreliable
If she doesn't write every step down, her results will not be the same when she repeats the investigation
Researchers grew some bacteria in a lab and tested them in several trials. The results are shown in the table. In this experiment, which trial served as the control?
1
2
3
4
Sara is studying the human skeletal system. Her classroom has a model skeleton. What main advantage does a model skeleton have over a drawing of a skeleton?
It shows how the body moves.
It displays all of the bones at once.
It displays the skeleton in three dimensions.
It makes it easier to learn the names of each bone.
Which of the following best explains why the process of water evaporating is a physical change?
When water evaporates, the substance disappears.
When water evaporates, the chemical identity of the substance does not change.
When water evaporates, the molecules break apart into individual atoms.
When water evaporates, the molecules react with the air.
For many years, researchers hypothesized people developed stomach ulcers from eating spicy foods. Later research showed that a particular bacterium living inside the highly acidic environment of the stomach produced a coating that attacked the stomach lining. This process led to the formation of stomach ulcers. These findings sent researchers looking for an antibiotic that could treat the problem bacteria. Subsequent studies found a host of antibiotics that effectively treat the bacteria and lead to the healing of the ulcers. Which of the following best illustrates the scientific process?
Unexpected findings can cause scientists to rethink earlier hypotheses.
Scientists in the same research group tend to view data in the same way.
Some medical problems, such as ulcers, cannot be treated using exercise.
Medicine sometimes provides a cure that is worse than the original disease.
The atomic number of Carbon is 6, which means that Carbon atoms always have 6
Ions
Protons
Neutrons
Valence Electrons
A student holds a book at rest in an outstretched hand. The force exerted on the book by the student is equal to the book's
Mass
Weight
Volume
Density
What is the source of energy for the Sun?
Hydrogen fusion
Internal combustion
Nuclear fission of metals
Burning of solar gases
Ocean Evaporation Condensation Which of the following would come next?
Vaporization
Crystallization
Sublimation
Precipitation
Scientists have found fossils of tropical plants in Antarctica. How could tropical plants have grown in Antarctica?
At one time, Earth's entire surface was a tropical rain forest.
At one time, Antarctica was located closer to the equator.
The rotation of Earth has increased, causing cooling of the atmosphere.
Catastrophic volcanic eruptions melted the ice and exposed the soil to sunlight.
The points labeled on the chart below represent the approximate size of Earth, the Milky Way, the Moon, and the Sun. The approximate size of the Solar System is also shown. Which point on the chart best represents the approximate size of the Sun?
W
X
Y
Z
In 1995, the Hubble Space Telescope photographed a tiny spot in the sky for a period of ten days; 342 exposures were placed together to create an image known as the Hubble Deep Field. Although the sample is tiny, it is representative of the universe, which looks similar in all directions. The image below shows a collection of billions of stars. The Hubble Deep Field shows at least 3,000 groups of these stars. Which term describes this group of stars?
Moon
Galaxy
Universe
Solar system
The Sun's energy and composition is provided by which of the following
The burning of fossil fuels within the Sun
Solar power that produces electricity in the Sun
The Sun's magnetic field
The fusion of hydrogen into helium
Our solar system consists of eight planets. Each planet is classified as either a terrestrial planet or a gas giant planet. Which is a difference between these two types of planets?
Terrestrial planets are larger than gas giant planets.
Gas giant planets are denser than terrestrial planets.
Terrestrial planets have thinner atmospheres than gas giant planets.
Gas giant planets have rockier crusts than terrestrial planets.
The sun is made up of different elements. Which element makes up more than 70 percent of the sun?
Carbon
Helium
Hydrogen
Oxygen
Which of these processes is defined as the joining of two atomic nuclei to create a new nucleus?
Nuclear fission
Nuclear fusion
Particle radiation
Nuclear radiation
The current model of our Solar System is called the heliocentric model, which means the Sun is at the center. Before scientists developed the current model, which is best supported by the evidence, what was believed to be the center of our solar system?
The Solar System had no center because all the planets' orbits were random.
A star other than the Sun was the center of the Solar System.
A black hole was the center of the Solar System.
Earth was the center of the Solar System.
The terrestrial planets include Mars, Venus, Earth, and which other planet?
Mercury
Jupiter
Saturn
Uranus
Which of the following does the tilt of the axis of rotation best explain?
Why Earth has tides
How long an Earth day is
How long an Earth year is
Why Earth has seasons
Which term best describes this movement of soil from one place to another?
Deposition
Discharge
Erosion
Weathering
Which of the following processes formed the landforms shown?
The transport and deposition of sediment by ice
The transport and deposition of sediment by water
The transport and deposition of sediment by wind
The transport and deposition of sediment by gravity
Which type of evidence acts as a record of changes in species over time and indicates major changes in Earth’s surface and climate?
Fossil record
Movement of continents
Ripple marks and mud cracks
Composition of ice core samples
Interactions between layers of Earth cause convection currents to move crustal plates. In which layer of Earth are the convection currents that directly result in tectonic plate motion found?
1
2
3
4
Amanda dropped a rock into a graduated cylinder containing water. The water level in the cylinder increased. Which property of the rock is this experiment designed to measure?
Density
Volume
Mass
Weight
Josie partially filled a graduated cylinder with water. She then dropped a rock into the water. The illustration below shows what happened to the level of the water inside the graduated cylinder. What is the volume of the rock?
5 mL
10 mL
35 mL
40 mL
Which statement is true of all matter?
It has mass.
It can be seen.
It exists only as a solid.
It maintains its shape and size.
Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas. During this process, which property of the ice cube remained unchanged?
Density
Mass
Temperature
Volume
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table. Why are these elements in the same column in the periodic table?
They have similar properties.
They have atoms of the same size.
They have the same number of protons.
They have the same number of neutrons.
Which of the following is NOT made up of atoms?
Heat
A gas
A cell
A solid
What atoms combine to make up a compound of water (H₂O)?
1 hydrogen, 1 oxygen
1 hydrogen, 2 oxygen
2 hydrogen, 1 oxygen
2 hydrogen, 2 oxygen
The diagram shows the three states of matter. Which diagram shows the state of matter in which particles take on the shape, but not volume, of their container?
1
2
3
Both 1 and 3
In which state of matter are the particles able to move around one another?
Gases only
Liquids only
Gases and liquids only
Gases, liquids, and solids
Ted wants to know the average atomic mass of calcium. He knows that the letters Ca stand for calcium. He found the entry for calcium, Ca, in Period 4 of the periodic table. Which of the following numbers should Ted identify as the average atomic mass of calcium, Ca?
4
20
40.078
60.078
Sunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the nonvisible energy?
It travels at a different speed through space.
It travels a different distance through space.
It has different wavelengths.
It has different amplitudes.
The visible part of the electromagnetic spectrum consists of the colors that we see in a rainbow. Different colors correspond to different wavelengths of light. Which color of visible light has the shortest wavelength?
Red
Green
Violet
Yellow
