Comp Sci 3 EOC Review Day 1

Standard: SC.8. E.5.9

Kim is writing an equation to show the effect of the gravitational pull of the sun and the moon on tidal range. Which equation would Cassie use to show the effect of the sun and the moon on spring tides?

• A.  sun + moon = spring tides

• B. sun + Earth = spring tides

• C.  moon – sun = spring tides

• D.   Earth – moon = spring tides

Answer explanation

A. is CORRECT because the alignment of sun, moon and earth creates spring tides

B. is not correct because the alignment of sun, moon earth creates springs tides however, the moon has the greatest influence on tides

C. is incorrect because sun has a gravitational pull as well

Tags

NGSS.MS-ESS1-1

Standard: SC.8.E.5.9

Mark and Sandra have learned that seasons are caused by the tilting of the earth with respect to the Sun. They want to know what would happen if Earth’s tilt did not have tilt. Which of the following statements would be correct to answer their question?

• A. The Earth would no longer experience seasons.

• B. There would be no noticeable change occurring with seasons.

• C. The seasons would be opposite, with hot winters and cold summers. 

• D. Summers would be extremely hot, and winters would be exceptionally cold.

Answer explanation

 Why A. is CORRECT. If earth did not tilt and orbited in an upright position around the sun, there would be minor variations in temperatures and precipitation throughout each year as Earth moves slightly closer and farther away from the sun. Basically, we would not have any season.

Tags

NGSS.MS-ESS1-1

Standard SC.8. E.5.9

Between which TWO POSITIONS will the view of the moon from Earth change from a full moon to a third quarter moon?

• A. 1 and 2

• B. 2 and 3

• C. 3 and 4

• D.  4 and 1  

Answer explanation

Why CORRECT: Answer D. 4 and 1  represents full moon to 3^rd quarter

Answer A.  1 and 2    represents  3^rd quarter to new moon

Answer B. 2 and 3  represents new moon to 1^st quarter  

Answer C. 3 and 4  represents   1^st quarter to full moon

Tags

NGSS.MS-ESS1-1

Standard: SC.8. E.5.9

On a visit to a beach in Florida, Charley noticed that sometimes the water was closer to her feet and hours later it was far away.  Her father told her that the difference was caused by the ebb and flow of tides What is the main cause of ocean tides?

• A. The rotation of the Earth.

• B. The magnetic fields around the Earth.

• C. The gravitational pull of the Moon.

• D. The revolution of Earth around the Sun

Answer explanation

A. The rotation of the Earth.   The cause of the 24 hr clock day/night

B. The magnetic field around the Earth. 

Earth’s magnetic field acts like an invisible shield around Earth that protects it from dangerous things, like radiation from the sun.  It starts at the Earth’s Core.

Why C. is CORRECT : The gravitational pull of the Moon.  

The moon’s gravitational pull is the primary tidal force. The moon’s gravity pulls the ocean toward it during high high tides. During low high tides, the Earth itself is pulled slightly toward the moon, creating high tides on the opposite side of the planet

D. The revolution of Earth around the Sun.  * Cause the year 365

Tags

NGSS.MS-PS2-4

Standard: SC.8. P.8.5

Robert is completing the table shown below.  What are the best headings for Columns A and Columns B?

• A. Column A - Atoms

  Column B - Mixtures

• B. Column A - Mixtures

  Column B - Atoms

• C. Column A - Elements

  Column B - Compounds

• D. Column A - Atoms

  Column B - Elements

Answer explanation

Vocabulary

An element is the simplest form of a substance.  Generally, it cannot be simplified or broken down further into smaller particles. An atom is the part of an element. A particular element is composed of only one type of atom.

A combination of two or more elements chemically combined is a compound .

A Mixture can be homogenous (Kool Aid) or heterogenous (Fruit Loops)

A. Column A - Atoms Column B - Mixtures  

B.   Column A - Mixtures Column B - AtomsColumn B: Compounds 

Why answer C is CORRECT

C. Column A - Elements Column B - Compounds 

Elements are the Simplest for of a substance, Compounds are two or more element chemically combined

D. Column A - Atoms Column B - Elements

Tags

NGSS.MS-PS1-1

Standard: SC.8. P.8.5

Carbohydrates like sugars and starches are made of only three elements: carbon (C), hydrogen (H), and oxygen (O). How is it possible that many different carbohydrates are formed using only three elements?

• A. These elements are the least reactive in their family.

• B. Different protons let these elements bond in a number of different ways.

• C. Different combinations of the three elements results in different compounds

• D. These elements can be transformed into different elements, and then form new compounds.

Tags

NGSS.MS-PS1-1

Standard: SC.8. N.1.1

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. What is the outcome variable (dependent variable) in this experiment?

• A. Type of soda given to each group

• B. Amount of soda given to each group

• C. Pulse rate of each group

• D. Age of participants in each group

Standard: SC.8. N.1.1

A biologist formulates a hypothesis, performs experiments to test his hypothesis, makes careful observations, and keeps accurate records of his findings. Which of the following would correctly complete the biologist process?

• A. Adjust the data to support the hypothesis

• B. Eliminate data that do not support the hypothesis

• C. Write a research explaining his theories paper before performing his experiments, in order to gain funding sources

• D. Evaluate the findings and, if necessary, alter the hypothesis based on his findings, and test the new hypothesis.

Tags

NGSS.MS-LS1-5

Standard: SC.8. L.18.4

Johanna learns that the Law of Conservation of Energy states that energy is conserved, never lost. Which of the following best describes the process by which energy transfers from plants to animals?

• A. Carbonation

• B. Cellular respiration

• C. Decomposition

• D. Photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3