Explorers 5th Grade Science STAAR Review

Examine the information about the densities of different objects. If water has a density of 1g/cm³, which two objects will sink when placed in water?

• aluminum key chain

• foam container

• cork

• shoelace

• wooden block

Tags

NGSS.MS-PS1-2

The table contains information about a material in a container.

A student adds more of the same material to the container and makes a new table of information. Which statement explains the information that should be in the new table?

• The mass of the material will increase, the physical state will change to liquid, and magnetic and insulator will change to yes.

• The mass of the material will decrease, the physical state will stay the same, and magnetic and insulator will change to yes.

• The mass of the material will increase, and the physical state, magnetic, and insulator will stay the same.

• The mass of the material will decrease, the physical state will change to liquid, and magnetic and insulator will stay the same.

Tags

NGSS.MS-PS1-2

A material is used to surround electrical wires because it will prevent a person from being shocked. It can also be used to help keep drinks cold for a long time. Which set of physical properties of the material makes it useful for these purposes?

• does not conduct electricity, conducts heat

• does not conduct electricity, does not conduct heat

• conducts electricity, does not conduct heat

• conducts electricity, conducts heat

Fiona and Bob work together to investigate the properties of sand and water. Fiona pours water through a strainer and then pours sand into the strainer. Bob mixes the sand and water and then pours the mixture through the strainer. What does their investigation show about a mixture of sand and water?

• Sand and water remain the same substances but exchange physical properties.

• Sand and water remain the same substances and keep their physical properties.

• Sand breaks apart in water to form two or more new substances.

• Sand and water combine to form a new substance.

Taylor passes a magnet through a mixture of iron filings and sand. Why does the magnet attract the iron filings, but not the sand?

• Iron and sand exchange their physical properties in the mixture.

• Iron and sand keep their physical properties and do not form a new substance.

• Iron and sand keep their physical properties as they form the new substance of the mixture.

• Iron and sand form a new substance that blends their physical properties.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student combines red powder drink mix and room temperature water in a container. As the student stirs, the powder can no longer be seen in the water, and the solution in the container turns from clear to red. What physical properties are different in the powder mix, water, and solution?

• The solution is not in a solid state like the powder drink mix, and the solution is not clear like the water.

• The solution is colder than the powder drink mix, and the solution is not clear like the water.

• The solution is colder than the powder drink mix, and the solution is not in a liquid state like the water.

• The solution is colder than the powder drink mix, and the solution is not in a liquid state like the water.

Tags

NGSS.MS-PS1-2

Emily stirs sugar into a pitcher of water to form a solution. The data table shows measurements of the sugar, water, and solution. How has Emily demonstrated that matter is conserved in a solution?

• The measurements are expressed in metric units, not customary units.

• The volume of the solution is the same as the volume of the water.

• The mass of the solution is the sum of the masses of the sugar and water.

• The temperature of the solution is between the temperatures of the sugar and water.

Tags

NGSS.MS-PS1-5

Ayala turns on a flashlight during a camping trip. The flashlight uses battery to produce light.

Which sequence best describes how energy is transformed in a flashlight?

• Electrical energy --> Light energy --> Chemical Energy

• Chemical Energy --> Electrical energy --> Light energy

• Light energy --> Electrical energy --> Chemical energy

• Thermal energy --> Light energy --> Electrical energy

Devaughn constructs the electrical circuit shown here. Then he decides to revise the circuit. Which changes would keep electrical energy flowing in the circuit? Select all of the correct answers.

• Replace the lightbulb with a heating coil.

• Remove the wire between the battery and the switch.

• Replace the switch with a metal form or spoon.

• Replace the battery with another light bulb.

• Remove the wire between the switch and the lightbulb.

Tags

NGSS.MS-PS3-5

Many cars run on electrical energy from batteries instead of the burning of gasoline or other fuels. Which statement about energy transformation applies only to electric vehicles, not gasoline-powered vehicles?

• The energy of motion is transferred into thermal energy.

• Electric energy and thermal energy are transformed into each other.

• Electric energy is transferred through the vehicle without being transformed.

• Electric energy is transformed into the energy of motion.

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-5