EOC

Which layer is shown in red? (a)  

• crust

• mantle

• outer core

• inner core

The variable that is changed in an investigation (test variable). (a)  

• independent variable

• dependent varaible

• control variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

Scientists frequently repeat the experiments of others scientists. Why is this important in science?

• Scientists often ask each other for help in performing experiments.

• Replication of experiments helps to confirm and verify results.

• Scientists frequently perform other scientists’ experiments in order to practice their technique.

• Repeating experiments is an effective way to make sure a laboratory is in optimal condition.

Kaylee reads an article that states that the frequency of chirping by crickets is related to the temperature of their environment. She wants to conduct an experiment to see if this is true. Kaylee states this hypothesis: Crickets chirp more frequently when the temperature of their environment increases. What is the test variable (independent variable) and outcome variable (dependent variable) in Kaylee’s experiment?

• a.test variable (independent variable): number of crickets; outcome variable (dependent variable): frequency of chirping

• b. test variable (independent variable): temperature of environment; outcome variable (dependent variable): frequency of chirping

• c. test variable (independent variable): number of crickets; outcome variable (dependent variable): temperature of environment

• d. test variable (independent variable): frequency of chirping; outcome variable (dependent variable): temperature of environment

A statement that describes what scientists expect to happen every time under a particular set of conditions is a (a)  

• scientific inquiry

• scientific hypothesis

• scientific theory

• scientific law

If something new is discovered in science, what will most likely happen?

• The scientific knowledge may change as long as there is empirical evidence to support it.

• Science will be called inaccurate and untrustworrthy.

• The scientists that discovered the new information will be fired from their research positions.

• None of the above.

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS1-2

How can we collect empirical evidence?

• Through our own personal beliefs and bias

• Through experimentation, investigations, and observations.

• Predictions from only mathematical models.

• Predictions from only 3-D physical models.

Tags

NGSS.MS-LS1-1

NGSS.MS-PS1-2

This layer is a solid ball of metal.

• Crust

• Mantle

• Outer Core

• Inner Core

Which of Earth's layers is best described as liquid metal? (a)  

• crust

• mantle

• outer core

• inner core

Which of the following is true regarding the composition of the lithosphere?

• The lithosphere is mostly liquid, with some medium-density materials, such as silicon.

• The lithosphere is more plastic and flows slowly compared to the solid crust of Earth.

• The lithosphere includes the core and the lower portion of the mantle.

• The lithosphere includes the crust and the uppermost portion of the mantle, which is sold and rigid.