QUIZZIZ REVIEW: SC.6.L.14.4 & SC.6.N.2.2

(SC.6.N.2.2) The Wright brothers are famous for inventing the first powered airplane. The brothers studied the work of earlier inventors. To test their ideas, they built a wind tunnel. They started simply, by studying kites, and then moved to more complex gliders. Ultimately, they developed a powered flying machine. Which of the following reasons is most likely to have led to the Wright brothers' success?

• They had plenty of money to fund their experiments.

• They studied only the successes of previous inventors.

• They used a scientific approach and developed new ideas from failed experiments.

• They were lucky and smart and brave.

Answer explanation

The Wright brothers' success stemmed from their scientific approach, learning from failures and refining their designs. This method allowed them to innovate and ultimately create the first powered airplane.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

(SC.6.N.2.2) Scientific knowledge continues to expand as new discoveries are made. Which of the following has played the most significant role in advancing scientific knowledge about cell biology?

• triple-beam balance

• syringe

• microscope

• pie chart

Answer explanation

The microscope has been crucial in advancing cell biology by allowing scientists to observe cells and their structures in detail, leading to significant discoveries about cell function and organization.

(SC.6.N.2.2) A long-standing question in science has been, "What caused the dinosaurs to become extinct?" In the mid-1900s, the idea was proposed that caterpillars ate so many leaves that dinosaurs starved and could not reproduce. Today, the most commonly accepted idea is that a large body from space hit Earth and triggered the extinctions. What does this change in scientific thinking provide evidence of?

• that scientists change their minds regularly

• that scientific knowledge is open to change

• that scientists don't know what happened

• that scientific information is universal

Answer explanation

The shift from the caterpillar theory to the asteroid impact theory illustrates that scientific knowledge is open to change as new evidence emerges, reflecting the evolving nature of scientific understanding.

(SC.6.N.2.2) Scientific knowledge is based on empirical evidence. Which of the following is NOT true about scientific knowledge?

• It is open to change.

• It has been tested.

• It is long lasting.

• It provides absolute truths.

Answer explanation

Scientific knowledge is not absolute; it evolves with new evidence. The statement 'It provides absolute truths' is false, as science is always open to revision and improvement based on new findings.

Tags

NGSS.MS-PS1-2

(SC.6.N.2.2) Scientific understandings can change as new information is discovered. Which of the following is an example of how scientific understandings have changed?

• The law of universal gravitation has not been tested many times and is no longer taught in science.

• The understanding of mountain building and earthquakes changed once people accepted the theory of plate tectonics

• People once thought Earth was round. Now they understand that it is flat.

• The inclined plane, which is a simple tool that may have been used by the Egyptians to build the pyramids, now has other applications.

Answer explanation

The understanding of mountain building and earthquakes changed with the acceptance of plate tectonics, illustrating how scientific knowledge evolves with new evidence.

Tags

NGSS.MS-ESS1-4

(SC.6.N.2.2) Many years ago, people thought that the Sun revolved around Earth. Copernicus proposed that Earth revolved around the Sun. This was a huge change in the way humans understood the world. Why didn't this reversal of ideas cause people to give up on the idea of science?

• because the earlier ideas were not based on observations of the movements of objects in the sky

• because people have always believed that scientists can find the answers

• because people trust in science and always accept new ideas

• because the process of science allows for changes to be made as new evidence is found

Answer explanation

The correct choice highlights that science is a process that adapts to new evidence. Copernicus' idea was accepted because science evolves, allowing for corrections and advancements in understanding.

(SC.6.N.2.2) Scientific knowledge is capable of lasting a long time. What makes scientific knowledge hold up so well over time?

• Once established, scientific laws cannot be broken or revised.

• As new evidence is presented, scientific knowledge is open to revision.

• Scientific knowledge is published in well-respected journals, so it is easy to locate.

• Scientific knowledge is well researched and permanent.

Answer explanation

Scientific knowledge is robust because it evolves with new evidence. This openness to revision allows it to adapt and remain relevant over time, unlike fixed laws that cannot change.

Plant cells are different from animal cells.

Compared to the structures in an animal cell, which of the following structures is found only in a plant cell?

• Cell Wall

• Nucleus

• Cytoplasm

• Mitochondria

Answer explanation

The cell wall is a structure found only in plant cells, providing support and protection. In contrast, animal cells lack a cell wall and have other structures like a flexible plasma membrane.

Which cell organelle controls all the activities of the cell?

• Cell Wall

• Cell Membrane

• Chloroplasts

• Nucleus

Answer explanation

The nucleus is the cell organelle that controls all activities of the cell, including growth, metabolism, and reproduction, by regulating gene expression and storing genetic information.

Tags

NGSS.MS-LS1-2

A cell can be seen by looking through a microscope. Seeing which of these organelles would let you know that you are looking at a plant cell?

• Cell Membrane

• Chloroplasts

• Mitochondria

• Nucleus

Answer explanation

Chloroplasts are unique to plant cells and are responsible for photosynthesis. Their presence indicates that the cell is a plant cell, while the other organelles listed can be found in both plant and animal cells.

Tags

NGSS.MS-LS1-2