1st 9wks Science Review

Four students stand facing a box. The diagram below shows an overhead view of the box. The numbered circles represent the positions of the students.

What do the students need to do to slide the box to the northeast?

• Students 1 and 2 push, Students 3 and 4 pull.

• Students 2 and 3 push, Students 1 and 4 pull.

• Students 1 and 4 push, Students 2 and 3 pull.

• Students 3 and 4 push, Students 1 and 2 pull.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student observes that the craters on the moon are different sizes. The student designs an experiment to study the formation of the craters. The materials for the experiment are marbles and a pan of flour. The student makes a hypothesis that the size of the craters made on the surface of the flour will depend on the height from which the marble is dropped. Some of the steps in the experiment are described in the box. Which of these is most likely Step 3 in the experiment?

• Drop the same marble from different heights into the pan of flour.

• Drop marbles of different sizes from different heights into the pan of four.

• Drop marbles of different masses from the same height into the pan of flour.

• Drop a single marble one time into the pan of four.

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

Students drop the same heavy ball onto identical blocks of soft clay from different heights. For each height they measure the depth of the dent the ball makes in the clay.

Why is the depth of the dent different in each trial?

• 
  The size of the ball changes.

• The mass of the ball when it hits the clay changes.

• 
  The material of the ball changes.

• The force of the ball when it hits the clay changes.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A student conducts the investigation shown in the diagram. In this experiment a paper cup hangs from a string tied to a single uncooked spaghetti noodle. The student measures and records the mass of a penny. The student adds pennies to the paper cup one at a time.

Which question is the student most likely trying to answer with this investigation?

• How many spaghetti noodles will it take to hold up the mass of a penny?

• 
  How long should the string that holds the paper cup be in order to support the greatest mass of pennies?

• How much force will it take to break the spaghetti noodle?

• How does the distance between the two chairs affect the amount of force it takes for the spaghetti noodle to break?

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

By changing the surface over which the car rolls from sandpaper to wax paper, you might be able to test the effect of what force?

• Magnetism

• Wind

• Mass

• Friction

Tags

NGSS.MS-PS2-2

Which of the following will occur when light is refracted by the lens?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

Which example below shows what will happen to light when it strikes a mirror?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

A worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet. When the concrete was dry, the worker washed the sidewalk with water. The picture below shows the sidewalk after it was washed. What most likely happened to the salt? (5.5C)

• 
  It evaporated into a gas.

• It dissolved in the water.

• It turned into concrete.

• It turned into a solid.

Tags

NGSS.MS-PS1-2

A student dissolves 20 grams of salt in a pan of 200 milliliters of water. The student places the pan on a hot stove. How much salt is left after all the water evaporates?

• There is no salt left because it evaporates with the water.

• 10 grams of salt evaporates, leaving 10 grams in the pan.

• 20 grams of salt is left after all of the water evaporates.

• Evaporation causes no change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

The boiling point of water is __________.

• 
  100 degrees Celsius

• 
  32 degrees Fahrenheit

• O degrees Celsius

• 50 degrees Celsius

Tags

NGSS.MS-PS1-4