Main Ideas

What idea about density is illustrate by the table from your assignment regarding different amounts of molasses ?

• The mass and volume both change when changing the amount of molasses. However, the density does not change. This is because the mass and volume increase at the same rate/proportion.

• The mass and volume both change when changing the amount of molasses. That causes the density to change. This is because with more molasses there will be greater density compare to smaller amounts.

Tags

NGSS.MS-PS1-2

When another old cave is discovered in the south of France, it is not usually news. Rather, it is an ordinary event. Such discoveries are so frequent these days that hardly anybody pays heed to them. However, when the Lascaux cave complex was discovered in 1940, the world was amazed. Painted directly on its walls were hundreds of scenes showing how people lived thousands of years ago. The scenes show people hunting animals, such as bison or wild cats. Other images depict birds and, most noticeably, horses, which appear in more than 300 wall images, by far outnumbering all other animals. Early artists drawing these animals accomplished a monumental and difficult task. They did not limit themselves to the easily accessible walls but carried their painting materials to spaces that required climbing steep walls or crawling into narrow passages in the Lascaux complex. Unfortunately, the paintings have been exposed to the destructive action of water and temperature changes, which easily wear the images away. Because the Lascaux caves have many entrances, air movement has also damaged the images inside. Although they are not out in the open air, where natural light would have destroyed them long ago, many of the images have deteriorated and are barely recognizable. To prevent further damage, the site was closed to tourists in 1963, 23 years after it was discovered.

• Wild Animals in Art

• Hidden Prehistoric Paintings

• Exploring Caves Respectfully

• Determining the Age of French Caves

Weather reporters have to give out a lot of information. That's why they use pictures. The pictures help them tell us about the weather without using so many words. Weather reporters need to know where the cold air is. They need to know where the warm air is. They have to know where it is raining and what types of clouds are in the area. Their reports need to be correct, but they also need to be short. The pictures help weather reporters get the information out in a fast way.

Which sentence best describes the main idea of the paragraph?

• Weather reporters need to know where the cold air is

• Pictures help weather reporters get information out in a fast way

• Their reports need to be correct, but they also need to be short

• They have to know where it is raining and what types of clouds are in the area

Do you ever remember your dreams? You may not remember what you dream, but you probably dream every night—almost everyone does. Why do you have dreams? Scientists disagree on exactly why you dream. Some say it is your brain’s way of processing things. You learn a lot and have a lot of things happen to you, so while you sleep, your brain processes that information. Dreaming might be the way your brain makes sense of what happens to you. Some say that dreams are the way your brain solves problems. Suppose you are upset about something. Dreams may be a way for your brain to help you feel better. People may not agree on why you dream. But everyone agrees that dreaming is very important. You need to dream so that your brain is ready for the next day

• How to fall asleep

• Where to find a good bed

• How many hours of sleep you need

• Dreams

Which of the following statements best describes the main idea of the given passage? Passage: [Insert a short passage here] a) Option A b) Option B c) Option C d) Option D

• Option D

• Option B

• Option C

• Option A

Why is it important to identify the main idea of a passage or text?

• To waste time and effort

• To ignore the author's message

• To understand the purpose and message of the author and retain information better.

• To confuse the reader

What is the main idea behind the theory of evolution by natural selection?

• Survival of the fittest

• Inheritance of acquired traits

• Use and disuse of organs

• Spontaneous generation

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Which of the following best describes the main idea of Newton's First Law of Motion?

• Objects in motion stay in motion unless acted upon by an external force

• For every action, there is an equal and opposite reaction

• Force equals mass times acceleration

• Energy cannot be created or destroyed

What is the main idea of the scientific method?

• To prove hypotheses correct

• To systematically investigate phenomena

• To collect as much data as possible

• To publish research findings

Tags

NGSS.MS-PS1-2

Which statement best captures the main idea of the conservation of energy principle?

• Energy can be created and destroyed

• Energy is always conserved in isolated systems

• Energy is only conserved in chemical reactions

• Energy conservation applies only to mechanical systems

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5