Science Review

1. What type of energy is generated when a person rubs their hands together?

• chemical

• heat

• light

• mechanical

Tags

NGSS.MS-PS3-5

Which of these types of renewable technologies uses air to produce energy?

• a windmill

• hydroelectric dam

• solar panel

• engine that burns biodiesel fuel

Which statement best describes a solid?

• no definite volume or shape

• definite volume, definite shape

• no definite volume and a definite shape

• definite volume and no definite shape

Tags

NGSS.MS-PS1-4

Look at the table. Which is the best conclusion?

• sugar stops dissolving at high temps

• sugar dissolves slower in warmer water

• sugar dissolves faster in warmer water

• sugar dissolves faster in cooler water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is Juan most likely to observe?

• the sugar and sand have settled into layers

• both sand and sugar are no longer visible

• the sand has settled to the bottom, but the sugar is floating on top

• the sand has settled to the bottom, and the sugar has dissolved in the water

What would be the fastest way to melt the ice?

• shake the cup

• transfer the ice to a foam cup

• put the cup of ice into direct sunlight

• pack as much ice into the cup as possible

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What would be the fastest way for Corey to remove the iron nails?

• heat the mixture

• dissolve the mixture in water

• apply a magnet to the mixture

• pick the nails out of the mixture

How do the physical properties of a gas compare to those of a liquid?

• gases and liquids both have a definite shape

• liquids have a definite shape, while gases can change their shapes

• gases take the shape of their container, while liquids expand to fill their containers

• liquids take the shape of their containers, while gases expand to fill their containers

Which action will NOT make the sugar dissolve faster?

• stirring the lemonade

• warming the lemonade

• adding more sugar cubes

• breaking up the sugar cubes

Which of these is a physical change that occurs because of a decrease in temperature?

• boiling

• condensation

• evaporation

• melting

Tags

NGSS.MS-PS1-4