Escape Middle School Science (7)

Which terms best describe the properties of a gas?

• definite volume and a definite shape

• definite volume and no definite shape

• no definite volume and a definite shape

• no definite volume and no definite shape

Tags

NGSS.MS-PS1-4

The diagram represents a thermometer. Which principle best explains how this thermometer works?

• A liquid changes to a gas when heated.

• A gas changes to a liquid when heated.

• A liquid expands when heated and contracts when cooled.

• A liquid contracts when heated and expands when cooled.

Tags

NGSS.MS-PS1-4

Which process results in the formation of water on the outside of a cold glass of iced tea on a warm day?

• boiling

• freezing

• condensation

• evaporation

The diagram below represents a graduated cylinder containing water before and after a rock suspended on a string is lowered into it. What is the approximate volume of the rock suspended in the graduated cylinder?

• 50 mL

• 100 mL

• 250 mL

• 300 mL

Tags

NGSS.MS-PS1-2

All matter is made up of

• cells

• atoms

• molecules

• compounds

Tags

NGSS.MS-PS1-1

The diagram below represents a portion of the Periodic Table of the Elements. Based on its position in the Periodic Table, at room temperature, cadmium is most likely a

• noble gas

• nonmetal

• metal

The model below represents a molecule of ammonia gas. Ammonia gas would be classified as

• a compound

• a mixture

• an element

• an atom

Tags

NGSS.MS-PS1-1

The diagram below represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling is considered to be a

• chemical change, because a new substance is formed

• chemical change, because a new substance is not formed

• physical change, because a new substance is formed

• physical change, because a new substance is not formed

Tags

NGSS.MS-PS1-4

Which force causes a satellite to remain in orbit?

• magnetism

• gravity

• electricity

• friction

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

The diagram below represents a weightlifter holding a barbell above his head.

The force of gravity pulling down on the barbell is 756 newtons (N). How many newtons of force are exerted by the weightlifter to hold the barbell up?

•  0 N

• 378 N

• 756 N

• 1512 N

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2