Science EXAM

The diagram shows a ball in a beaker filled with water. Which statement best describes the relationship of the ball and the water?

• A The water is less dense than the ball.

• B The water and the ball are equally dense.

• C The ball is less dense than the water.

• D There is no relationship between the ball and the water.

Based on the properties of the three objects investigated by the students, which is most likely a metal?

• Object 1

• Object 2

• Not attracted

• Not attracted

Tags

NGSS.MS-PS1-2

Which two objects are most likely more dense than water?

• A Plastic ring and glass marble

• B Wood block and plastic ring

• C Glass marble and metal spoon

• D Wood block and metal spoon

Which of these is not soluble in water?

• F Sugar

• G Salt

• H Syrup

• J Oil

A student mixed 8 g of flavored drink mix and 2 g of sugar in 200 mL of water to create a sweet drink. The student tasted the drink and decided it wasn’t sweet enough, so she added 2 g more of sugar and stirred it to help dissolve the sugar. Which properties of the flavored drink changed as the sugar dissolved?

• A The sweetness of the solution

• B The volume of water in the solution

• C The temperature of the solution

• D The color of the solution

Tags

NGSS.MS-PS1-2

A teacher sets up an experiment using three jars like the ones shown below. The jars are wrapped with equal thickness of three different materials.

The jars are filled with an equal amount of water that is 95°C. Students observed and recorded the water temperature in each jar each minute over a 10-minute period. They then graphed their data. The results are shown in the graph below.

Based on the data, the students can conclude that –-

• F Cotton cloth, aluminum foil, and paper are all equally good insulators of thermal energy.

• G The temperature of the water in the jar covered in aluminum foil remained the same.

• H Cotton cloth is the best insulator of thermal energy because it maintained the highest water temperature.

• J Paper is the poorest insulator of thermal energy because the temperature of the water in the jar decreased more quickly.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A chef added salt to a hot pot of soup. What property of the salt remained the same when it was in the soup?

• A The color of the salt

• B The taste of the salt

• C The size of the salt crystals

• D The texture of the salt

Which of the following mixtures could be easily separated by the archaeologists using a sieve?

• F Fine soil and ground flour

• G Sand and fine soil

• H Water and fine soil

• J Fine soil and large pieces of broken dishes

Below is a container with a mixture of sand and iron filings.

Which tool would most easily separate the mixture?

• A magnet

• B sieve

• C hot plate

• D water

A student was riding to school in a cool school bus on a hot, humid day. The student noticed that droplets of water formed on the inside of the cool, foggy bus windows. She drew a smiley face in the fog on the window because she was happy to be going to school.

What change in physical state caused the fog and water droplets to form on the inside of the window?

• Freezing caused a liquid to form a gas

• Condensation caused a gas to form a liquid

• Solidification caused a liquid to form a solid

• Melting caused a solid to form a liquid

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4