Physical Science Sol

Students placed steel wool in beakers of four different liquids in order of the most acidic to neutral. The students recorded their observations in the table. Which is the best conclusion based on the table?

• the more acidic the substance, the faster it reacts with steel wool

• the more acidic the substance, the faster the steel wool turns to a gas

• the less acidic the substance, the faster the steel wool becomes covered with air bubbles

• the less acidic the substance, the faster the steel wool changes color

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A cold air mass moves underneath a warm air mass causing the warm air to rise. This event can best be identified as --

• a cold front

• a warm front

• an occluded front

• a stationary front

Tags

NGSS.MS-ESS2-5

Which three drawings best represent objects with kinetic energy?

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Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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A student measured the power of a motor operating at different temperatures. The student recorded a total of 11 measurements, one at each 2 degree interval between 10^oC and 30^oC. Which change in the procedure would most improve the validity of conclusions based on this investigations.

• increasing the number of variables

• decreasing the range of the independent variable

• repeating the experiment several times

• producing a graph of numerical observations

Tags

NGSS.MS-PS3-1

Which of these has the strongest gravitational field?

• Sun

• Earth

• Saturn

• Jupiter

Tags

NGSS.MS-PS2-4

Which is the result of using a more powerful motor to run an elevator?

• the same amount of work is done in less time

• less work is done in the same amount of time

• the same amount of time is needed to move the same distance

• a longer time is needed to move a shorter distance

What are the correctly ordered steps for cloud formation?

• water vapor cools, liquid water evaporates, water condenses, warm water vapor rises

• warm water vapor rises, liquid water evaporates, water vapor cools, water condenses

• liquid water evaporates, warm water vapor rises, water vapor cools, water condenses

• liquid water evaporates, water vapor cools, warm water vapor rises, water condenses

Why is water known as the "universal solvent"?

• it dissolves all known substances

• it dissolves only solid substances

• it dissolves the greatest number of substances

• it dissolves substances faster than all other solvents

Sound waves are unable to travel through --

• air

• a vacuum

• water

• a rock

Tags

NGSS.MS-PS4-2