Scientific Investigation Review

Grace wanted to see if her plants would grow faster if they were placed under an artificial growing lamp instead of sunlight. She placed half of her plants in a room with two windows and an artificial growing lamp. She placed the other half of the plants in a room with six windows. What is one major mistake Grace made when setting up this experiment?

• The plants receiving light from the artificial lamp were placed in different sized containers.

• All of the plants received equal amounts of fertilizer.

• All of the plants were watered the same amount.

• She used two different kinds of plants

Tags

NGSS.MS-LS1-5

The mass of a rock was taken on a triple beam balance and the measurement is shown. What is the mass of the rock?

• 436.0 g
• 436.8 g
• 430.6 g
• 437.0 g

Isaac's family went on a trip to Africa and visited the Plains and Acacia Savannahs for  five straight days. Isaac decided to keep a count of the total number of Wildebeest he saw each day and created the chart above. What is missing from his chart?

• The chart needs to have an appropriate title.
• The chart needs to have the actual location where the wildabeest were counted.
• The chart needs to indicate how many wildebeests are represented in one wildebeest picture.
• The X-axis needs to be labeled with the days he visited the area.

Tags

NGSS.MS-PS3-1

Mary is testing which brand of fish food will make her fish grow the largest in length. She set up four different experiments below. Which experiment is invalid because it only contains controls and no variables?

• Row 1
• Row 2
• Row 3
• Row 4

Tags

NGSS.MS-ETS1-1

NGSS.MS-LS1-5

A student conducted an experiment to test the movement of a marble through four different liquid substances. Looking at the figure designed by the student, what is an error in his experiment?

• The amount of liquid substances used is not consistent.
•  The type of marble used is not consistent.
•  The type of liquid substances are not labeled correctly.
• The marbles are not dropped from the same distance.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What statement is a correct conclusion for the data shown?

• The average heart rate of a person exercising over a 5 minutes period was 101 bpm.
• The average heart rate of a person exercising over a 5 minute period did not exceed 115 bpm.
•  As a person exercises for 5 minutes, their heartbeat continually rises over time.
•  After 3 minutes of exercise, a person's heartbeat will begin to lower.

Tags

NGSS.MS-LS1-3

What is the independent variable in the following hypothesis?
HYPOTHESIS: If I spend more time studying, then my grades in science will improve.

• An improvement in grades
•  Location for studying science
• Time spent studying
•  Playing soft music in the background

A student conducted an investigation on the growth of bacteria over time. He incubated three different types of bacteria for 120 minutes. He began counting the number of bacteria grown after 30 minutes. What is the independent variable in this experiment?

• Trial number
• Number of bacteria
• Incubation time
•  Type of bacteria

Lola created a scientific experiment measuring the caloric requirements of males and females. She concluded from her data that her hypothesis was correct. What was Lola's hypothesis?

• Boys will reach their calorie requirement peak earlier than girls.

• Boys will have a higher calorie requirement than girls starting at age 9.

• Boys and girls will share the same calorie intake during their pre-teen years.

• Boys and girls will have similar calorie requirements at all ages.

Tags

NGSS.MS-LS1-7

What happened to the otter population between 1940 and 2000?

• The population increased and then decreased.
•  The population continued to increase.
• The population continued to decrease.
•  The population stayed the same.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4