MISA Intervention 2

Gravity can be defined as a force of attraction between objects. The effects of gravity can be witnessed in many systems. Which of these actions is an example of gravity influencing other systems?

• a. Surface water evaporating into the atmosphere

• b. planets moving around the Sun in an elliptical pattern

• c. glaciers melting because of increasing temperatures

• d. groundwater moving to the surface in an artesian well

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Select the answer from the menu.

Planets remain in orbit around the Sun because of 

• a. gravity

• b. friction

• c. solar energy

• d. centrifugal force

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A science class is doing an experiment performing the procedure as shown.

                                                              Experimental Procedure

1. 1. Grind salt into a powder.

2. 2. Heat a small beaker of water.

3. 3. Completely dissolve the salt in the water while stirring.

4. 4. Add silver nitrate solution to form a white solid.

During which step of this procedure  does a chemical change occur?

• a. 1

• b. 2

• c. 3

• d. 4

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

The water cycle is an integral part of the natural mechanism for transporting and recycling water on Earth.

An important step in this process is evaporation. Which energy changes occur when water evaporate?

• a. Thermal energy causes the water molecules to move faster.

• b. Potential energy in rain is used to convert liquid water vapor.

• c. Mechanical energy in the atmosphere separates water molecules.

• d. Solar energy breaks down liquid water into hydrogen and oxygen.

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NGSS.MS-ESS2-4

NGSS.MS-PS1-4

A glass of water left in the sun becomes warm. Estella adds ice to make it cool. What energy change occurs when ice is added to the warm water.

• a. The water loses heat to the ice, causing the ice to melt.

• b. The water absorbs the cold temperature from the ice.

• c. Since the ice is cold, it adds cold to the environment.

• d. The melting ice causes the water to expand, cooling it.

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NGSS.MS-PS1-4

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How do the changes in physical states produce a cooling effect inside the refrigerator?

• a. The phase changes require the conservation of electricity.

• b. The phase changes require the absorption and release of heat.

• c. The phase changes are caused by ice cooling the inside of the refrigerator.

• d. The phase changes are caused by higher temperatures outside the refrigerator.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Fruit trees are sometimes sprayed with water to protect them from a brief period of temperatures below freezing. The water on the trees freezes and temporarily protects the fruit. Which best explains how water provides this protection to the fruit?

• A. Water releases heat energy into its environment as it freezes.

• B. Water molecules remain in motion after freezing, releasing heat energy to the fruit.

• • C. Water acts as a good conductor, allowing any environmental heat to reach the fruit.

• D. Water molecules expand as they freeze, increasing the insulation protection of water.

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NGSS.MS-PS1-4