Milestones Science Review

Jeff was riding in a car.  Which change demonstrates the GREATEST effect of inertia?

• The car makes a sudden stop

• the car slows down gradually

• the car changes into another lane

• the car runs out of gas and rolls to a stop

Tags

NGSS.MS-PS2-2

Manuel is coasting on his bike.  Because he is not pedaling, his bike will come to a stop.  Which of these will cause Manuel's bike to stop?

• an increase in kinetic energy

• Earth's magnetic field

• the property of inertia

• the force of friction

Josie sees lightning off in the distance.  A few seconds later she hears thunder.  What can Josie conclude?

• Sound waves do not travel long distances

• Light waves travel faster than sound waves

• Sound waves are weaker than light waves

• Light waves last longer than sound waves

Students poured equal amounts of different liquids to see how the liquids became layered.  The denser liquids layered at the bottom. The lighter liquids layered at the top.  Which tool should the students us in this experiment?

• A balance scale

• a thermometer

• a magnet

• a graduated cylinder

Tom places four objects in a tank of water.  He makes the following observations.-A cork floats-A rock sinks-A soda can floats-A piece of chalk sinks. Which statement is correct based on Tom's observations?

• The rock and the chalk have a density greater than water

• The rock and the chalk have a density less than water

• The cork and the can of soda have a density equal to water

• The cork and the can of soda have a density greater than water

A scientist combines oxygen and hydrogen to form water.  This combination illustrates that water is

• An atom

• An element

• A mixture

• A compound

Tags

NGSS.MS-PS1-1

What is the smallest particle of the element gold (Au) that can still be classified as gold?

• Atom

• Proton

• Neutron

• Molecule

Tags

NGSS.MS-PS1-1

In a laboratory, a sealed container with 100 g of steam is cooled until all the steam becomes a liquid.  The container is then cooled further until all the water becomes a solid.  Which of the following remains constant during both of these changes?

• The mass of the water

• the pressure in the container

• the total energy of the water

• the position of the atoms in the container

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A chemical reaction produces two new substance, and each product has a mass of 50 grams.  What was the total mass of the reactants

• 25 grams

• 50 grams

• 100 grams

• 1000 grams

Tags

NGSS.MS-PS1-5

The atom is composed of electrons, protons, and neutrons.  What is the electric charge on the neutron?

• -1

• +1

• 0

• +2