Science Msl

Why might a scientist repeat an experiment if she/he didn't make a mistake in the first one? Experiments are repeated to

• make sure she/he gets IDENTICAL results.

• see if any portion can be skipped or ignored.

• prove that your results were incorrect the first time.

• check to see if the procedure was correct and nothing was left out.

Tags

NGSS.MS-PS1-2

A hurricane becomes more powerful by evaporating water from

• lakes

• mountains.

• rivers.

• oceans.

Tags

NGSS.MS-ESS2-4

While at the beach, Sam and Sal recorded the temperatures on land and at sea. They discovered that each morning the ocean and land had a similar temperature. On a sunny day, the sun continues to warm both the ocean and land, but unequally. During the day, which direction will the wind MOST LIKELY blow?

• The wind will not blow.

• The wind will blow toward land.

• It will vary throughout the day.

• The wind will blow toward the ocean.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Energy is transferred in solids by conduction, which means that

• heat travels in both directions.

• heat travels from the cooler object to the hotter object.

• heat travels from the hotter object to the cooler object.

• heat does not travel between objects of different temperatures.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The main difference between weather and climate is the

• time of year on Earth.

• amount of time we consider.

• where Earth is in its orbit.

• amount of sunlight reaching Earth

What makes the black surface of a playground get warmer on a sunny day than on a cloudy day?

• More children play outside when it is sunny.

• More heat goes into the black surface on a cloudy day.

• Clouds absorb all of the heat from the playground.

• The sunlight heats up the playground.

Tags

NGSS.MS-PS1-4

Identify which statement represents a scientific law.

• Black holes exist.

• Some numbers are more lucky than others.

• The core of the Sun has a temperature of 14.5 million Centigrade.

• Energy can be neither created nor destroyed.

Tags

NGSS.HS-PS1-7

NGSS.HS-PS3-1

A scientific theory can be defined as a well-supported and widely accepted explanation of nature. According to this definition, which statement describes a scientific theory.

• The Sun will die in 7.5 billion years

• The Sun will rise tomorrow morning.

  
  

  .

• Matter is comprised of atoms.

• The universe was created at the Big Bang.

Tags

NGSS.HS-ESS1-2

The water cycle describes the continuous movement of water on, above, and below the surface of the Earth. The fundamental process of the water cycle can be modeled to illustrate the most important aspects of the natural phenomenon. The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, energy is removed which cools the environment. When water condenses, it releases energy and warms the environment. In addition, the water cycle transfers water from one system to another. The water cycle purifies water, replenishes the land with freshwater, and transports minerals to different parts of the globe. But, most importantly the water cycle is crucial in the maintenance of life and the ecosystems of Earth. Study the diagram. What cause and effect prediction can be used to test the assumptions in the model?

• condensation will cause the temperature to decrease in the system

• evaporation does not effect temperature change in the system

• condensation does not effect temperature change in the system

• evaporation will cause the temperature to decrease in the system

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which best describes the difference between a theory and a hypothesis?

• A hypothesis can be tested and a theory has already been tested.

• A theory can be tested and a hypothesis has already been tested.

• A hypothesis must be testable and theory does not need to be testable.

• A theory must be testable and hypothesis does not need to be testable.