Deja and Zhi conducted an experiment to test their hypothesis that male eggs of the American alligator only hatch at high temperature. They conducted an experiment and their results were organized in the data table above. They concluded very high temperatures killed unhatched alligators. What comment(s) would you make to Deja and Zhi regarding their conclusions?

• a. Their conclusion is supported by the data. Nothing should be added or deleted.
• b. They should reject their hypothesis. More males hatch at low temperatures, and more females hatch at high temperatures.
• c. They should accept their hypothesis, and also note that more eggs fail to hatch at high temperatures.
• d. They did not sample very many eggs, and no pattern is apparent in the data.

Tags

NGSS.HS-LS4-5

When designing an experiment, scientists will test a relationship between a "cause" and an "effect." The "effect is known as the ____________.

• a. dependent variable
• b. constant
• c. independent variable
• d. control group

Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

In this experiment, the independent variable they are testing is

• A. change in the mass of the eggs.
• B. the ending mass of the eggs
• C. the amount of time they were in the solution
• D. the type of solution the egg is placed in

Tags

NGSS.MS-PS3-4

Leah, LaRenda, and Gabi decide to test what factors influence Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

The dependent variable in this experiment is

• A. the change in mass of the eggs
• B. the ending mass of the eggs
• C. the amount of time they were in the solution
• D. the type of solution the egg is placed in

Tags

NGSS.HS-ESS2-5

Leah, LaRenda, and Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours. The mass of the eggs is then measured, and the data recorded below:

Based on the data this group gathered, the most appropriate hypothesis would be

• A. “If an egg is placed in corn syrup, then it will gain mass.”
• B. “If an egg is placed in vinegar overnight, then its shell will dissolve.”
• C. “If three eggs are each placed in three different solutions, then the egg in distilled water will lose mass.”
• D. “If an egg is placed in a pure water solution, then the egg will gain mass.”

A golf club company has four models of golf clubs. Average strokes saved per 18 holes is a positive indicator of quality (the more strokes saved, the better the golf clubs). The manufacturing time per set is a measure of how long it takes to manufacture one set of clubs. If the company wishes to produce a lot of golf clubs quickly, which set would be the best choice to meet their criteria, based on the data table?

• A. Legacy
• B. Titleist
• C. Premium
• D. Taylor Made

Tags

NGSS.HS-ETS1-3

Ada and Elijah have decided to do an experiment testing how sunlight affects plant growth. The students choose the same type of plants, soil, pots and amount of water they give the plants. They also make sure each plant is put in their designated area for the same amount of time each day. One plant is placed outside; one in front of a window that only gets light for 1/2 the day, and one in a closet. The students collect data every day for two weeks. Their results show that the plant outside grew the most and the plant in the closet had the least amount of growth. What are the constant variables that Ada and Elijah used in their experiment?

• A. type of environment
• B. type of soil
• C. amount of light
• D. Both A and B

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

8a. Look at the picture below. Of the following choices, choose all that would fall under the category of QUALITATIVE observations.

• The bowl has M&Ms in it.
• The bowl has red, orange, yellow, green, blue, and brown M&Ms in it.
• The person shown loves M&Ms.
• The person shown is eating M&Ms for breakfast.
• There are four orange M&Ms on the spoon.

8b. Look at the picture below. Of the following choices, choose all that would fall under the category of QUANTITATIVE observations.

• There are four orange M&Ms on the spoon.
• There is one spoon.
• There are three green M&Ms on the spoon.
• The person shown loves M&Ms.
• The person shown is eating M&Ms for breakfast.

8c. Look at the picture below. Of the following choices, choose all that would fall under the category of Inferences.

• The person shown loves M&Ms because they have so many in front of them.
• The person shown is eating M&Ms for breakfast because it looks like cereal in a bowl.
• The person shown is getting ready to eat M&Ms because they are holding the spoon up to their open mouth.
• There are four orange M&Ms on the spoon.
• There is one spoon.