Force, Motion and Energy Review

Which examples are USING electrical energy?

1. The motor in the can opener turned on to open the can.

2. The kids clapped their hands at the end of the symphony performance.

3. We put our homework in our backpacks.

4. The movie theater lights turned on after the movie ended.

5. The bell rang at the end of the school day.

• 1, 3, 4

• 2, 3, 4

• 1, 4, 5

• 1, 2, 5

Which object needs both thermal and electrical energy for its main purpose?

• Pencil Sharpener

• Ceiling Fan

• TV

• Flat Iron for Hair

Which of these changes to the electric circuit shown will cause the lightbulb to light up?

• Straightening the wire so that the current can flow more easily.

• Turning one battery so that its positive end connects to the other battery's negative end.

• Making the length of wire the same on both sides of the lightbulb.

• Adding a switch and more wire so that the current can flow more easily

Tags

NGSS.MS-PS2-3

NGSS.MS-PS3-5

This circuit has three lightbulbs and a bell. Which procedure will result in only the blue lightbulbs operating?

• Close Switches 1 and 2 and leave Switch 3 open

• Close Switch 3 and leave Switches 1 and 2 open

• Close Switches 2 and 3 and leave Switch 1 open

• Close Switch 2 and leave Switches 1 and 3 open

As light passes through the prism, it slows and bends, but different wavelengths bend at different angles. This separates light into different wavelengths, forming a rainbow of colors. The VISIBLE light that PASSES through the prism is an example of:

• Light reflects as it passes through the prism.

• Light reflected off the prism.

• Light bouncing off and makes the rainbow.

• Colored light changing into white light.

Tags

NGSS.MS-PS4-2

What will happen when a pencil is placed in water? 

• Reflect

• Absorb

• Refract

• Transmit

Tags

NGSS.MS-PS4-2

This is an example of? 

• Absorb

• Reflect

• Refract

• Transmit

Tags

NGSS.MS-PS4-2

A student uses a spring scale to pull blocks with different masses horizontally across a wood desk. Then the student pulls the blocks the same distance. Which question is this investigation most likely designed to answer?

• How does the force change for the different masses of blocks?

• How do blocks affect spring scales?

• How do different surfaces affect the amount of force needed to move a block?

• How does the mass of a block change when it is pulled across a desk?

Tags

NGSS.MS-PS2-2

The reflective surface bulges outwards toward the light source which results in a distorted image but an expanded field of view. It is this wide-angle field of view. What is this an example of?

• Convex Mirror

• Concave Mirror

Answer explanation

A convex mirror is a diverging mirror in which the reflective surface bulges towards the light source. They are not used to focus light as they reflect light outwards. The image formed by convex mirrors are smaller than the object but gets larger as they approach the mirror.

Tags

NGSS.MS-PS4-2

 

A student uses a spring scale to pull a 50-gram block horizontally across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass. Which question is this investigation most likely designed to answer?

• How do block of different sizes react to force?

• How do blocks affect spring scales?

• How do different surfaces affect the amount of force needed to move a block?

• How does the mass of a block change when it is pulled across a desk?

Tags

NGSS.MS-PS2-2