Sol Physical Science

A metal spoon was placed in a dish of ice cream and became cool. Which correctly describes the heat transfer process that resulted in the cooling of the spoon.

• Conduction, because the spoon was in contact with the cold ice cream.

• Convection, because the spoon was in contact with the cold ice cream.

• Conduction, because cold air currents affected the temperature of the spoon.

• Convection, because cold air currents affected the temperature of the spoon.

Tags

NGSS.MS-PS3-4

• A,B,C

• C,D,F

• B,E,F

• C,E,F

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Which is the result of using a more powerful motor to run an elevator?

• The same amount of work is done in less time.

• Less work is done in the same amount of time.

• The same amount of work is needed to move the same distance.

• A longer time is needed to move a shorter distance.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Sound waves are unable to travel through -

• air

• a vacuum

• water

• a rock

Tags

NGSS.MS-PS4-2

A group of campers travels to a cabin which has no electrical power. In order to provide the power for a heater and lights, which device would be appropriate?

• A resistor

• An insulator

• A generator

• A voltmeter

Tags

NGSS.HS-PS3-3

As the frequency of a wave decreases, the wave's -

• period decreases

• amplitude increases

• speed decreases

• wavelength increases

Tags

NGSS.HS-PS4-1

Which change will most likely increase the strength of a magnetic field produced by an electromagnet.

• Reduce the number of turns of the coil

• Switch the direction in which the battery is connected

• Remove the iron nail

• Add a battery

A girl kicks a soccer ball into the air. Which of these best explains why the soccer ball falls back to earth.

• The acceleration of the ball is unstable.

• The motion of the ball is changed by external forces.

• The pressure of the ball changes with altitude.

• The force exerted on the ball is greater than gravity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the following is an example of static electricity?

• A dry-cell connected to wires lights up a light bulb.

• A balloon sticks to a wall after it is rubbed with a piece of wool.

• A magnet sticks to a refrigerator door made of metal.

• A light switch that is turned on runs a ceiling fan.

• 1 and 2

• 1 and 4

• 2 and 3

• 2 and 4

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1