systems and models ESS

Which of the following are characteristics of a good model?

• The model explains how a complex phenomena arises from simpler phenomena.

• The model can compare poorly understood aspects of the real world to a well-understood aspect.

• The model is testable and generates predictions that reflect what is happening in reality.

• All the responses are correct.

Tags

NGSS.MS-ETS1-4

Which of the following is not an advantage of a model?

• Illustrate complex concepts and formulate hypotheses.

• There are no figures so they are easier to understand.

• They are simplified versions of real life.

• They can show very large or very small things.

The scientific method forms the basis for making models and the initial steps are:

• Observe the real world, Identify patterns and connections, Identify causes of patterns and connections, Design a model to reflect reality, Test the model.

• Observe the real world, Design a model to reflect reality, Identify patterns and connections, Test the model.

• Design a model to reflect reality, Identify patterns and connections, Identify causes of patterns and connections, Test the model.

• None of these are correct.

Which of the following shows only carbon cycle stores from the figure below?

• Atmosphere, industry, fossil fuels, animals, soil

• Photosynthesis, decay, sedimentation, combustion, respiration

• Plants, atmosphere, fossil fuels, animals, soil

• Atmosphere, industry, decay, sedimentation, combustion

Tags

NGSS.MS-LS2-3

Energy cycles whereas matter flows. Is this statement true or false?

• true

• false

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a transformation?

1. Water flowing downstream in a river.

2. Ocean currents moving heat around.

3. Food moving along the food web.

4. Plants photosynthesising.

• 1

• 2

• 3

• 4

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is the correct definition of a closed system?

• Exchanges neither energy nor matter with its surroundings.

• Exchanges energy but no matter with its surroundings.

• Exchanges matter and energy with its surroundings.

• Exchanges matter but not energy with its surroundings.

Tags

NGSS.HS-PS3-4

The biochemical cycles are one of the emergent properties of the biosphere. Answer true or false.

• true

• false

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following statements includes information about a system?

• A system consists of a number of parts.

• The parts of a system interact with each other but not the environment.

• A system is anything non-living.

• None of these include anything about systems.

Tags

NGSS.MS-LS1-3

The biosphere is an example of a ____________ system. The _____________ is an example of an isolated system.