Review

What happens to air once it becomes heated by landmasses or oceans?

• The air is not affected

• The warmed air rises moving by conduction

• The warmed air rises moving by convection

• The warmed air rises moving by radiation

Tags

NGSS.MS-ESS2-6

Which is NOT a factor to determine the apparent magnitude of a star.

• how big the star is

• how far away the star is from earth

• how dense the star is

• how much energy the star has

Fresh strawberries are delicious but will ripen and rot quickly. To slow down that process its best to keep your strawberries_______

• in the dark to keep the sunlight off the berries

• in the refrigerator to slow the chemical reactions that rot the berries

• on a window sill in the sun to ripen the berries more

• in a fruit bowl on the counter because they are beautiful

Tags

NGSS.MS-LS1-5

Which statement BEST describes the phenomenon these experiments are investigating?

• The mass of an object affects the direction of motion of an object

• The motion of an object depends on the object's mass and the forces acting on it.

• The amount of gas that is released by a balloon varies with the mass of the balloon.

• The amount of friction between an object and surface depends on the mass of the object.

Tags

NGSS.MS-PS2-2

Which of the following describes how the forces in the experiment can be controlled?

• Each balloon can travel the same distance each time.

• The number of pennies on the balloon can be counted.

• The same straw and wire can be used for each investigation.

• Each balloon can be filled with the same number of pumps of air.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which describes the MOST LIKELY reason the students would add books to the basket during the investigation?

• A. to add mass to the basket

• B. to help transport the books

• C. to change the direction of the basket movement

• D. to increase the speed at which the basket moves

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The students would like to record data on the forces applied to the pulley system in their investigation. Which of the following describes the BEST way the students could do this?

• For each student, record whether or not they pulled on the rope with a strong pull.

• For each student, record whether they exerted a light pull, a strong pull, or no pull at all.

• Record the number of books in the basket, and record how quickly the basket moves when it is pulled.

• Record the direction in which the basket moves, and record how quickly the basket moves when it is pulled.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The students claim that an object that is subjected to balanced forces does not experience a change in motion. Which TWO experiments could the students perform to collect data that support their claim?

• an experiment in which only Student 1 exerts a light pull on the rope

• an experiment in which only Student 1 exerts a strong pull on the rope

• an experiment in which Student 1 and Student 2 both exert a light pull on the rope

• an experiment in which Student 1 and Student 2 both exert a strong pull on the rope

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Rachel knows that the force of an object can be affected by its mass and speed &modifies her design by adding a parachute. Which statements describe how the modification will affect her design? Select ALL that apply.

• A. The modification will decrease the mass of the design.

• B. The modification will absorb all of the force exerted by the ground upon impact.

• C. The modification will reduce the amount of kinetic energy reached by the design.

• D. The modification will slow the speed at which the design falls.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

An athlete lifts two different exercise balls, a yoga ball ( 2 kg) and a medicine ball ( 8Kg).The medicine ball requires more force for the athlete to lift. Which claim is BEST supported by this data?

• A. The ball with the smaller volume has the weakest gravitational attraction with Earth.

• B. The ball with the larger volume has the strongest gravitational attraction with Earth.

• C. The ball with the larger mass has the greatest gravitational attraction with Earth.

• D. The ball with the smaller mass has the greatest gravitational attraction with Earth.

Tags

NGSS.MS-PS2-4