GR 7 MYA REVIEW

Amber writes in a laboratory notebook: I placed a piece of iron in a beaker of water and the iron sank to the bottom of the beaker. What Amber wrote in the laboratory notebook is an example of a(n)

• observation

• prediction

• inference

• hypothesis

Tags

NGSS.5-PS1-3

Hana and Natalia are planning a project on weather patterns. Which statement is an inference?

• A) A thermometer shows that the air temperature is 56°F.

• B) A mineral sample of galena produced a gray-black streak when tested.

• C) Based on previous data, ten hurricanes may occur in the year 2013.

• D) A weather vane indicates the wind is coming from the west.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

The data table shows the yield of vegetables in Thearol and Yeralis's garden for three years. The yield is the number of pounds of vegetables harvested. The same number of each type of vegetable was planted every year. Which statement is an inference?

• The onion yield was greater than the beet yield in 2013.

• The butternut squash yield increased from 2011 to 2012.

• The spinach yield was 102 pounds in 2011 and 137 pounds in 2012.

• The acorn squash yield decreased from 2012 to 2013 due to lower temperatures.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

During a science class, Hunter and Aiden were asked to make observations about a plant. In order to make accurate observations, they must always use

• experiments

• the senses

• proportions

• mathematical calculations

Yaretzi and Aiden are designing an experiment to determine if the temperature of water affects how well laundry detergent cleans clothing. Which statement best describes a hypothesis for this experiment?

• If more detergent is used, then the water will become colder.

• If more detergent is used, then the clothes will be cleaner.

• If the water is hotter, then the detergent will make the clothes cleaner.

• If the water is hotter, then the detergent will shrink the clothes.

Tags

NGSS.MS-PS3-4

To determine how many miles per gallon Yadiel's car gets, he put 10 gallons of gasoline in the car and recorded the distance it traveled until it ran out of gas. What would a scientist call Yadiel's actions?

• forming a hypothesis

• performing an experiment

• drawing a conclusion

• sharing information

Julia and Matthew performed an experiment designed to test the rate of evaporation of different solutions. They had different beakers containing water mixed with various substances, as well as one with just water. The beaker containing only water is known as the

• control

• dependent variable

• independent variable

• hypothesis

Eliana and Hunter are conducting a science project. They have identified a problem, formed a hypothesis, and performed an experiment. What is the final step of the scientific method?

• identifying the problem

• drawing conclusions

• performing an experiment

• forming a hypothesis

In a science class, Olivia and Mayson are conducting an experiment. They notice that a factor that changes during their experiment is called a

• control.

• hypothesis.

• variable.

• check factor.

Rocio, a gardener, did an experiment to determine which of the three brands of fertilizer would produce the most growth in her plants. For three different plants of the same species, she used each of the three brands of fertilizer. Once a week, she made observations for each plant. Which would have improved the experiment?

• Using a different species of plant for each brand of fertilizer.

• Mixing the fertilizers.

• Making observations every two weeks.

• Testing each fertilizer with more than one type of plant.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1