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Science Milestone

Authored by Charles Martinez

Other Sciences

8th Grade

Science Milestone
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17 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Tyson draws a model to show how the particles in a liquid appear. Which model (or models) above could be Tyson’s drawing of particles in a liquid?

model 1
model 3
model 1 and model 2
model 1, model 2, and model 3

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Match this description to the state of matter.
+/- particles, No shape or volume, Collide violently

Solid
Liquid
Gas
Plasma

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The strength of an electromagnet can be affected by

changing the current in the wire

changing the number of loops in the solenoid

changing the size of the iron core

all of the above

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

How do electromagnets differ from regular magnets? 

A. They  can be turned off and on 
B. Their polarity can be reversed
C. Their strength can be changed
D. All of the above

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A student made an electromagnet by wrapping copper wire around an iron nail. The student then connected each end of the electromagnet to the opposite terminals of a battery. The electromagnet will best function as a magnet as long as...?

electric current flows through the nail.
electrical energy is transformed into mechanical energy.
electric current flows through the wire.
electrical energy is transformed into potential energy.

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

60 N right
10 N left
60 n right
50 N left

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

The diagram below shows a skateboarder pushing himself forward with a force of 25 N while the wind pushes back with a force of 5 N. How will the skateboarder be affected if the force of the wind increases to 8 N?

The speed of the skateboarder will increase.
The speed of the skateboarder will remain constant.
The speed of the skateboarder will decrease.
The skateboarder will come to a stop.

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