Quiz about Sc.8.N.1.5

Question 1

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.

Accepted Answer

c

Answer

a

Answer

b

Answer

d

Question 2

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

Accepted Answer

a

Answer

b

Answer

c

Answer

d

Question 3

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

Accepted Answer

Models, Observations, & Research

Answer

Models, Observation, & Replication

Answer

Models, Repetition, & Replication

Answer

Models, Repetition, & Variables

Question 4

Science determines results based on _____________________.

Accepted Answer

Evidence

Answer

Rumor

Answer

Hypothesis

Answer

Popular opinion

Question 5

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

Accepted Answer

new evidence or interpretations

Answer

new experiments

Answer

new scientific beliefs

Answer

new theories develop

Question 6

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

Accepted Answer

it cannot represent a true cell which is 3 dimensional

Answer

it does represent the main parts of a cell

Answer

it does not contain the correct number of nuclei

Answer

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

Question 7

What is a scientific model?

Accepted Answer

A representation of an object or system

Answer

A representation of an object, but smaller

Answer

An exact representation made of similar material

Answer

A familiar copy of an object

Question 8

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.

Accepted Answer

a

Answer

b

Answer

c

Answer

d

Question 9

What is the BEST reason you always repeat an experiment?

Accepted Answer

Make sure your data is consistent and accurate

Answer

Make sure your data supports your prediction

Answer

Make sure your experiment is easy to do

Answer

Make sure your experiment has lots of data

Question 10

F-CIM SC.7.N.1.3

Dr. Yang conducted a field study of the nesting habits of red cardinals. Why did she choose a field study over other types of investigation?

a. because she wanted to manipulate variables in the field

b. because she wanted to observe the birds in their natural habitat

c. because she wanted to simulate the life cycle of the birds in a lab

d. because she wanted to observe a simplified version of the environment

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 11

Which of the following questions can be studied through scientific inquiry?

Accepted Answer

If someone plays violent video games are they more likely to display violent behavior?

Answer

Is it fair to have more than one best friend?

Answer

What type of crust makes the best pizza?

Answer

Do the colors purple and orange look good together>

Question 12

Which method is best for determining scientifically which of two fertilizers is most effective for raising tomato plants?

Accepted Answer

Apply one type of fertilizer to a group of similar tomato plants and apply a different type of fertilizer to a different group of similar tomato plants and compare the growth and appearance of both groups.

Answer

Treat two different varieties of tomato plants individually with the different fertilizers and measure their growth and appearance. Compare differences in the growth of individual plants.

Answer

Use one type of fertilizer on a group of different varieties of tomato plants and measure their growth and appearance. Compare their growth to a group of plants that were not treated with the fertilizer.

Answer

Mix the two types of fertilizers and apply the mixture to one variety of tomato plants and measure their growth and appearance. Compare their growth and appearance to a group of tomato plants that were not treated with the mixture.

Question 13

A group of students investigate the effect of carbon dioxide on plant height. The students grow plants in several closed containers. All the plants receive the same amounts of water and light, but the air in each container has a different amount of carbon dioxide. What is the test variable (independent variable) in this experiment?

Accepted Answer

amount of carbon dioxide in each container

Answer

height of each plant after a period of time

Answer

amount of air in each container

Answer

amount of water provided to the plants

Question 14

Astronomers study objects as large as galaxies. Chemists study objects that can be as small as an atom. Even though scientists in each field study very different things, why are both astronomy and chemistry considered science?

Accepted Answer

both fields use the same basic scientific methods

Answer

both fields are based on the same experiments

Answer

both fields require the same basic knowledge

Answer

both fields use the same technology

Question 15

Eddie wants to determine if different colored boxes produce the same temperature inside as a white box. He places white, black, and red boxes of the same size in the sunlight. A thermometer is placed inside each box. He observes and records the temperatures in the boxes throughout the day. What is the test variable (independent variable) in this investigation?

Accepted Answer

color of the boxes

Answer

size of the boxes

Answer

repeated trials

Answer

recorded temperatures

Question 16

A student is working on an experiment that measures the number of times a mouse can find cheese in a maze. The mouse is always taken out of the maze and placed at the same starting point when he enters the maze. The placement of the cheese changes each time the mouse is taken out of the maze. What is the dependent variable in this experiment?

Accepted Answer

the number of times the mouse finds the cheese

Answer

the placement of the mouse

Answer

the placement of the cheese

Answer

the type of mouse used to find the cheese

Question 17

An astronomer discovered a new comet in orbit around the Sun. He wants to learn more about the size, shape, and period of the comet's orbit. What type of investigation should the astronomer perform?

Accepted Answer

Observe the behavior of the comet as it moves in its orbit around the Sun.

Answer

Analyze data about similar comets that also orbit the Sun.

Answer

Set up a controlled experiment with dependent and independent variables.

Answer

Conduct a survey of astronomers to gather their opinions about the comet.

Question 18

The following chart shows the growth of three types of bean plants for four weeks. Which week did the pole beans grow the most?

Accepted Answer

Week 2

Answer

Week 1

Answer

Week 3

Answer

Week 4

Sc.8.N.1.5

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