1-6 P2 Forces and Trains

Reorder

Arrange the steps below in the correct order to show how an early steam train moved.

• burned coal or wood in locomotive

• a tank of water is heated

• water became steam

• The motion energy starts moving the train

1

2

3

4

• 1
• 2
• 3
• 4

Multiple Choice

Which of the following are benefits of using lighter metals in train construction?

• Needs less force to move

• Increase fuel consumption

• decrease train speed

Multiple Choice

Which of the following were problems caused by the need to stop trains for lubrication in McCoy's time?

• Trains became faster

• Less fuel was needed

• The process was expensive

Fill in the Blanks

Elijah McCoy invented a way to lubricate train engines without the need to

the train.

Fill in the Blanks

Elijah McCoy ended up with

patents for his engineering designs and inventions.

Multiple Choice

How does removing friction benefit maglev trains?

• It makes the train rides noisy and rough.

• It slows down the train.

• It makes train rides quiet and smooth.

• It increases pollution.

Dropdown

Match the following

Same poles -

Select answer

Opposite poles -

Select answer

Multiple Select

Which of the following are features of electrical magnets?

choose all correct answers

• They can be turned on and off.

• Their poles can be switched.

• Their strength can be controlled.

• They are always permanent magnets.

Dropdown

Select the correct expression:

A ​

Select answer

is a certificate from the government that gives an inventor credit for an invention.

To ​

Select answer

means to float in the air

​

Select answer

is the process of using oil or grease to reduce friction between moving parts.