S8S5

Which of the following planets only have one moon?

• Venus

• Earth

• Mars

• Jupiter

Which phases in the lunar cycle does numbers 5 and 7 represent?

• New moon and first quarter moon

• New moon and full moon

• Full moon and third quarter moon

• Full moon and first quarter moon

Tags

NGSS.MS-ESS1-1

A student is planning an investigation to determine the relationship between magnetism and the movement of electrical charge in a circuit. A diagram of the circuit is shown.

The student is planning to make changes to the circuit to see how the changes will affect the number of paper clips that are picked up by the electromagnet. What is the likely effect of the magnetic field if the student adds more coils?

• increase

• decrease

• no change

Tags

NGSS.MS-PS2-3

Students want to test several objects to see if they are insulators or conductors of electricity. They make this testing device.

Step 1: Assemble the testing device as show in the picture.
Step 2: Place an iron bar between the two clips
Step 3: Connect one clip to each end of the object
Step 4: Make the observation
Step 5: Make a conclusion based on the observation

Select one possible observation and its matching conclusion to explain the results of this experiment.

• the light bulb glows

• the object is a conductor

• the object is an insulator

• the light bulb does not glow

Students want to test several objects to see if they are insulators or conductors of electricity. They make this testing device. Select two steps from below the instructions into the correct boxes to complete the instruction list below: Step 1: Assemble the testing device as show in the picture. Step 2: Step 3: Step 4: Make the observation Step 5: Make a conclusion based on the observation

• Connect the two clips together

• Place the object between the two clips

• Connect one clip to one side of the object.

• Connect one clip to each end of the object.

• Touch the object to one side of the battery

Magnets and electromagnets can both be used to pick up metal items like iron nails. Although they are alike, there is a difference between magnets and electromagnets. An example of this is that increasing the current running through the electromagnet's wire will make it stronger. What is another difference?

• Increasing the amount of wire loops will increase the strength of an electromagnet

• There is no other difference between electromagnets and magnets.

• Electromagnets are always stronger than regular magnets.

• Decreasing the voltage will increase the strength

Tags

NGSS.MS-PS2-3

The strongest part of a magnet is...

• the bars.

• the force field.

• the poles. 

• the middle.

Tags

NGSS.MS-PS2-3

If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?

• Bowling Ball

• Feather

• Both would hit at the same time

• Neither one would hit the ground because air is what pushing things down.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Sandy rubs a rubber rod with a piece of animal fur. The total charge of the system before rubbing is zero. The system is made up of the rubber rod and the fur. Initially, the charge on the rod is zero and it is electrically neutral. The same is true for the fur. When Sandy rubs the rubber rod with the fur, the rubber rod acquires negative (-) charges. How does the system change, overall, based on the law of conservation of charge?

• The total charge of the system is now negative rather than neutral.

• Although the rod becomes negatively charged, the piece of fur remains neutral.

• If the rod becomes negatively charged, then the fur becomes positively charged.

• Both the rod and the piece of fur have become negatively charged during the rubbing.

What is the device seen here?

• generator

• electric motor

• electromagnet

• magnet

Tags

NGSS.MS-PS2-3