Unit 3: Test 1 Flashcards

Front

What causes an object to start moving?

Back

An object starts moving after it collides with something else. Energy is transferred to the object and the energy makes the object move.

Front

How does an object's motion change before it stops?

Back

The object slows down because its energy is transferred to the surface.

Front

Why does the object stop?

Back

The object stops moving because its energy gets transferred to the surface. It slows down until all of its energy is transferred to the surface, then it stops.

Front

What do you need for a testable question?

Back

1. Starts with how, what, or does 2. Has ONE independent variable 3. Is a fact, not an opinion

Front

Why should you perform more than one trial in an experiment?

Back

To make sure your results are not a mistake. If you get results that are similar to each other, they are probably correct. If your results are very different, you should look at what you’re doing.

Front

How does energy transfer into the object?

Back

By colliding with another object, energy from that object transfers into this one.

Front

How does energy transfer out of the object?

Back

By colliding with another object, energy from this object transfers into another one.

Front

How do forces cause the object to move?

Back

A force is a push or pull that transfers energy to an object. The energy moves the object.

Front

How does the surface cause the object to stop?

Back

Energy from the object is transferred to the surface. If an object has more energy, it has more speed. If energy is transferred to the surface, the object has less energy, so it slows down.