Science Chapter 4 Review

What makes the floating train start to rise off of the tracks?

• Repelling magnetic forces between a magnet in the train and one in the tracks.

• Attracting magnetic forces between a magnet in the train and one in the tracks.

What makes the floating train fall back down onto the tracks?

• Repelling magnetic force between a magnet in the train and one in the tracks.

• Gravity, an attracting force between the train and Earth.

Two Forces can be exerted on an object at the SAME TIME.

• True

• False

Tags

CCSS.HSN.VM.A.1

CCSS.HSN.VM.C.10

A _____ is when multiple forces of EQUAL STRENGTH act on an object.

• pattern

• design

• balanced forces

• magnetic force

A ____ happens when multiple forces of unequal strength act on an object.

• touching force

• unbalanced force

• magnetic force

• balanced force

When forces exerted on an object are BALANCED, the objects....

• movement changes.

• movement does NOT change.

When something is NOT CHNAGING, Scientist say that it is ____.

• non- stable

• stable

• growing

What Kind of force is happening here?

• balanced force

• magnetic force

• unbalanced force

• non- touching force

Tags

CCSS.HSN.VM.A.1

The table in this picture pushes up on the book while gravity pulls it down. The two forces have equal magnitude, but work in opposite directions; They are...

• balanced forces

• magnetic forces

• unbalanced forces

• non- touching forces

Why does the train float, even though gravity is acting on it?

• Magnets pull train to the track.

• The train floats because there are balanced forces acting on it.