Molecules and Water

Which statement is true about the molecules? Look at the PICTURE.

• All the molecules are made from three atoms.

• All the molecules include at least one carbon atom

• All the molecules include at least one oxygen atom.

• All the molecules are made from the same types of atoms.

Tags

NGSS.MS-PS1-1

A truck is driving down a hill. There is a thermometer mounted on the outside of the truck that shows the temperature to the driver as they travel down and back up the hill. Using your knowledge of molecules and movement where will the molecules of air (represented by dots in the picture) be moving the slowest?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

When molecules move faster the temperature gets ____________________.

• Higher

• Lower

• Stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Match the type of matter to the correct diagram

• A. Liquid B. Gas. C. Solid

• A. Gas. B. Liquid. C. Solid

• A. Solid. B. Liquid. C. Gas

A sixth grade class makes hot air balloons out of tissue paper. They use a launcher that blows warm air into the balloons. Once the balloon is filled with warm hair, the students release it into the sky. On a cold winter day, the balloons rise high into the air.

Why do the balloons rise into the sky?

• The tissue-paper balloons causes the balloon to float.

• The warm air in the balloon is less dense than the cold air around the balloon.

• The warm air shoots out of the bottom of the balloon making it rise.

• Once the balloon is filled with air, it rises because of its large size.

Tags

NGSS.MS-PS1-4

Matter is anything that has ____ and takes up ____.

• weight/a location

• volume/height

• mass/space

• density/mass

Khison has 4 different liquids and he uses a thermometer to determine their temperature. The temperatures are listed below.

)Liquid A= 20⁰

Liquid B =38⁰

Liquid C =2⁰

Liquid D= 17⁰

Based on the data listed up above. Which statement is true in this situation.

• The particles in Liquid D are moving quicker than the particles in Liquid B.

• The movement of particles cannot be determined from temperature alone

• The particles in Liquid D are moving slower than the particles in Liquid B.

• The particles in all liquids are moving at the same speed until there is a phase change.

Tags

NGSS.MS-PS1-4

Mrs. Smith makes a crockpot of hot chocolate for a party for her students. To help reduce waste, each student brought her or his own reusable container for hot chocolate. Some students bring thermoses and others just bring paper cups. Mrs. Smith ladles exactly 8 ounces of hot chocolate into each student’s container. Before they can drink their hot chocolate, there is a fire drill. After 30 minutes the students come back and some notice their hot chocolate is still warm, but others say their hot chocolate is completely cold. What is the BEST explanation for this?

• The hot chocolate that belonged to the students who brought paper cups remained warmer, because they acted as conductors and allowed the thermal energy to transfer to the cup.

• All the students’ containers acted as conductors and prevented the thermal energy from transferring out of the hot chocolate to the air, so the hot chocolate was really the same temperature.

• The hot chocolate that belonged to the students who brought thermoses remained warmer, because those containers acted as insulators and prevented the thermal energy from transferring from the hot chocolate to the air.

• Mrs. Smith must have come in from the fire drill and added fresh hot chocolate to some students’ containers, which created the variation in temperature among the students’ hot chocolate.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Mr. Davis noticed that in the winter the space near the front door of his house is cold. After investigating he realized that cold air is coming in from below the door. He would like to solve this problem by placing something along the bottom of the door to keep the cold air from entering his house. He decides which materials he will test and that he will record the temperature at the same time each day for a week. What else should Mr. Davis do to test which materials will best keep his home warm?

• Place one material against the door at a time, record the temperature of the room

• Place all his materials against the door, record the temperature of the room

• Place all his materials against the door, record the outside temperature

• Place one material against the door at a time, record the outside temperature

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Why are pot handles and cooking utensils often made of plastic or wood?

• Plastic and wood are good conductors of thermal energy.

• Plastic and wood transfer heat quickly from particle to particle.

• Plastic and wood are good insulators of thermal energy.

• Plastic and wood have closely spaced particles similar to metal.

Tags

NGSS.MS-PS3-3