Science Rise

A student needs to separate a mixture compsed of iron fillings and sand. How can the student most easily separate all the iron fillings from the mixture?

• Use a magnet to attract the iron filings

• Use filter paper to isolate the iron filings

• Add water to the mixture and pour off the floating iron filings.

• Add water to the mixture and allow it to evaporate and leave behind the iron filings

A student is identifying properties of chemical particles by using the chart below. Complete the chart by selecting boxes to identify each property as a description of an atom, a molecule, or both

Properties of Particles

Which are particles held together by bonding?

• atom

• molecule

Tags

NGSS.MS-PS1-1

A student is identifying properties of chemical particles by using the chart below. Complete the chart by selecting boxes to identify each property as a description of an atom, a molecule, or both

Properties of Particles

Which is the smallest particle of an element with properties of that element?

• atom

• molecule

Tags

NGSS.MS-PS1-1

A student is identifying properties of chemical particles by using the chart below. Complete the chart by selecting boxes to identify each property as a description of an atom, a molecule, or both

Properties of Particles

Which are composed of more than one particle?

• atom

• molecule

• Hydrogen

Tags

NGSS.MS-PS1-1

The diagram shows what happens when wood is burned

Burning Wood

^{wood + oxygen} = ^{ashes+carbon dioxide gas + water}

^{(starting) ------------------------------ (ending)}

Which statement best explains the change that occurs when wood is burned?

• This is physical change because the products can be changed back into wood

• This is physical change because the products are different from the starting materials

• This is chemical change because the products can be changed back into wood

• This is chemical change because the products are different from the starting materials

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The model shows a process that occurs in a tomato plant

A process Occurring in a Tomato Plant

Which labels correctly complete the model to help describe this process?

• 1.water 2. sunlight 3. stored energy

• 1.sunlight 2.stored energy 3.water

• 1.sunlight 2. water 3.stored energy

• 1.stored energy 2.water e.sunlight

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Which statement best describes an effect of humans on this food web?

• the population of bald eagles may be reduced by humans consuming too many smelt.

• Competition among humans, alewife, and smelt decreases food availability for bald eagles

• Humans decrease the populations of phytoplankton and zooplankton by consuming chinook salmon

• Human consumption of coho salmon and chinook salmon may reduce food sources for herring gulls

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The diagram below represents the saltwater solution made by the student. When salt (NaCl) molecules are added to water (H2O), they break into one sodium (Na) particle and one chlorine (Cl) particle.

Chose the name of the solvent and solute

• Solute = H2O Solvent=NaCI

• Solvent = H2O Solute= NaCl

What factor is responsible for the changes in Orion's position when viewed during the winter month?

• the rotation of the Sun

• the rotation of Earth on its axis

• the revolution of the Sun around the Earth

• the revolution of the moon around the Sun

Tags

NGSS.MS-ESS1-1

Which statement identifies the most likely outcome if the rabbit population suddenly reduced?

• Owls would become extinct because they have no food

• Hawks would have less food available so their population would decrease

• Grasshoppers would have less food available so their population would decrease

• Grasses in the area would die and all of the animals would have to move to another area to survive

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4