Sc 7 N 1 3

F-CIM SC.7.N.1.1

The graph below shows the number of students in a school who participated in athletics between the years

2005 and 2008.

STUDENTS PARTICIPATION IN ATHLETICS

By extrapolating data from the graph, predict the change in the numbers of male and female athletes in the year 2009.

a. Fewer females participated than men.

b. More males participated than females.

c. Fewer males participated than females.

d. The number of female and males athletes was even.

• a

• b

• c

• d

F-CIM SC.7.N.1.3

Claire decided to find out which wildflowers are most abundant near roadsides in her community. Which of the following would best help Clair with her investigation?

a. observation

b. making a model

c. using a computer model

d. conducting a controlled experiment

• a

• b

• c

• d

Other than scientific experiments, what other methods do scientists use to investigate problems?

• Models, Observations, & Research

• Models, Observation, & Replication

• Models, Repetition, & Replication

• Models, Repetition, & Variables

Tags

NGSS.MS-LS2-1

Science determines results based on _____________________.

• Rumor

• Hypothesis

• Evidence

• Popular opinion

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-4

Scientists sometimes change their views. For example, people once believed that Pluto was a planet. What causes these changes in thinking?

• new experiments

• new evidence or interpretations

• new scientific beliefs

• new theories develop

Tags

NGSS.HS-LS4-2

Which one is a limitation of a drawing but not a model of the cell?

• it does represent the main parts of a cell

• it does not contain the correct number of nuclei

• it cannot represent a true cell which is 3 dimensional

• it cannot represent a true cell since the cytoplasm should be in constant motion

Tags

NGSS.MS-LS1-2

What is a scientific model?

• A representation of an object, but smaller

• An exact representation made of similar material

• A representation of an object or system

• A familiar copy of an object

Tags

NGSS.MS-LS1-2

NGSS.MS-PS1-1

SC.7.N.1.4

Jason states the following prediction: “As the air temperature increases, the air in a balloon will expand, increasing the circumference of the balloon.”

Some of Jason’s observations during his experiment are shown below. Which of the following is the outcome variable (dependent variable) for an experiment designed to test Jason’s prediction?

a. circumference of the balloon

b. material the balloon is made of

c. length of the balloon’s string

d. air temperature

• a

• b

• c

• d

Tags

NGSS.MS-PS1-4

SC.6.N.1.4

Ty and Crystal are working together to learn about surface tension. They each add pennies to their own cup of water to see how many they can add before the cup overflows. Ty is able to add 15 pennies. Crystal is able to add 38. What should their next step be?

a. They should discuss differences in their methods.

b. They should each claim that their answer is right.

c. They should record their results and move on to a different investigation.

d. They should repeat the experiment using different pennies.

• a

• b

• c

• d

What is the BEST reason you always repeat an experiment?

• Make sure your data is consistent and accurate

• Make sure your data supports your prediction

• Make sure your experiment is easy to do

• Make sure your experiment has lots of data