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WorksheetsComp 3 Science Mission Possible Day 16
Total questions: 15
Worksheet time: 8mins
SC.8. N.1.1
Identifying the test (independent) variable and outcome (dependent) variables in an experiment will help you better interpret and convey results. What is the difference between the test (independent) variables and outcome (dependent) variables in an experiment?
The test (independent) variable is always a number, and the (outcome) dependent variable is never a number.
The test (independent) variable is what you control and the (outcome) dependent variable is what changes as a result.
The (outcome) dependent variable is what the investigator controls, and the test (independent) variable is what happens as a result of this.
The outcome (dependent) variable is typically found in the first column of a table, and the test (independent) variable is typically found in the second column.
SC.8. N.1.1
A scientist is in charge of studying how air quality affects the respiratory health of the citizens in the state of Florida. Which testable statement will the scientist investigate?
The quality of the air varies throughout the state.
Air quality in her state is worse than it is in other states.
Air quality has a relationship to respiratory problems.
Air quality is worsening due to increasing population and industrialization.
SC.7. N.3.1
Look at the figure below. The geocentric system was the first model of our solar system, dating back to the times of Aristotle. This model represented an Earth-centered system. However, not all astronomers agreed with the geocentric model Nicolaus Copernicus devised the heliocentric system with the Sun at the center of our solar system.
Copernicus’s development of this theory is best described as which of the following?
Scientific investigation is a key part when creating theories.
Many observations and much evidence is needed in order to create a valid theory.
Theories may be modified but are rarely discarded.
A fact that is supported by a great amount of evidence.
SC.8. E.5.9
Sometimes the moon looks like a crescent. At other times, the moon looks like a half circle. What makes it possible for you to see the surface of the moon from the Earth?
The moon gives off its own light.
Light from the sun is reflected by the moon’s surface.
Light from the earth is reflected by the moon’s surface.
The moon absorbs sunlight during the day and glows at night.
SC.8. E.5.9
When Earth moves into the moon’s shadow, a solar eclipse takes place. Which phase represents the appearance of the moon during a solar eclipse?
full moon
new moon
third quarter
waning gibbous
SC.8. E.5.9
A region on Earth’s surface always has the highest temperatures in June and the lowest temperatures in December. Which of these statements explains why the temperatures are lowest in December?
This region is tilted the most toward the sun in December.
This region is tilted the farthest away from the sun in December.
This region is the farthest distance from the sun in December.
This region is the nearest distance from the sun in December.
SC.8. E.5.5
Astronomers discovered a number of stars in a distant galaxy. Some were red, others white, and still others yellow. They compared them with the information in the graph. The diagram of graph comparing absolute magnitude and color.
Which type of comparison were they able to make based on the information in the graph?
white stars were large stars
red stars had low temperatures
white stars were brighter stars
yellow stars had lower temperatures and medium sizes
SC.8. E.5.3
According to the Law of Universal Gravitation, the strength of gravitational attraction between two bodies in our solar system or elsewhere in space depends on two factors and their relationship to each other. Which two of the factors listed are involved in determining the force of gravity between two bodies in space?
speed and mass
time and motion
mass and distance
distance and speed
SC.8. P.8.4
Erin makes a sugar solution by adding a 1 teaspoon of sugar at a time to 100 mL of water until no more sugar dissolves. Then she makes a salt solution by adding 1 teaspoon of salt at a time to 100 mL of water until no more salt dissolves. She observes that she adds fewer teaspoons of salt before it stops dissolving. What does she conclude about the solubility of sugar and salt in water?
They have no solubility.
They have the same solubility.
Salt has a higher solubility than salt.
Sugar has a higher solubility than salt.
SC.8. P.8.4
Jordyn has six samples of different material. Each sample has a mass of 7 grams. Jordyn sorts the samples into two categories according to one physical property.
Which physical property did Jordyn most likely use to sort the samples into groups?
Melting point
Thermal conductivity
Density
Magnetism
SC.8. P.8.5
Sarah is making a model of a chemical reaction. She uses different color spheres to represent atoms of elements. Her model is shown below.
Which of the substances shown in Sara’s model are compounds?
A
A and B
B and C
C
SC.8. P.8.5
Carbon monoxide detectors help protect people from being poisoned by carbon monoxide gas. A molecule of carbon monoxide is made up of one carbon atom and one oxygen atom. Which of the following best describes the properties of carbon monoxide?
It has a half the properties of carbon and half the properties of oxygen.
It has mostly the properties of oxygen and a few properties of carbon.
It has a unique set of properties that are different from carbon and oxygen.
It has the same properties as all other gases that are made of carbon and oxygen.
SC.8. L.18.4
The diagram above shows the player swinging towards ball.
Which of the following best explains what happens to the energy exerted by the player on the bat?
Energy decreased as the bat hits the ball.
Energy disappears as the bat hits the ball.
Energy is conserved and transferred from the ground to the ball.
Energy is conserved and transferred from the bat to the ball.
SC.8. L.18.4
The diagram below shows the recycling of oxygen and carbon dioxide between autotrophs and heterotrophs.
Which parts of the diagram illustrate parts of cellular respiration?
1 and 2
2 and 3
3 and 4
4 and 1
SC.8. L.17.2
The black widow spider is the most venomous spider in North America. After spinning its strong web of silk threads, the black widow waits nearby for its food to become trapped. The black widow then enjoys its share of the various insects such as beetles and cockroaches. Which best describes the relationship between the black widow spider and cock roaches?
Predator-prey relationship
Parasitic relationship
Mutualistic relationship
Commensal relationship
