EC1-REVIEW

Front

What information must be included in an investigation plan for a science experiment?

Back

All of the steps for conducting your experiment.

Front

What equipment is needed to investigate how long fifth graders can hang by their arms from a chin-up bar?

Back

stopwatch, chin-up bar, pencil, paper

Front

A student finds this graph in his science reference book.

Which of the following is not a reasonable interpretation of information in the graph?

• Levels of carbon dioxide increased between the years 1958 and 1992.
• Levels of carbon dioxide go up and down but gradually increase over time.
• Levels of carbon dioxide decreased dramatically after 1992.
• Levels of carbon dioxide increased over 30 parts per million between the years 1958 and 1992.

Back

Levels of carbon dioxide decreased dramatically after 1992.

Front

Which object requires only mechanical energy to perform its main function? Options: Hammer, Fan, Thermometer, Iron

Back

Fan

Front

After light leaves a special glass fiber, how does it travel? Options: in a straight line, back into the fiber, around the fiber, in a curve.

Back

in a straight line

Front

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?

Back

0

Front

Reasons for the appearance of the girl’s eye through the lab instrument?

Back

Front

Which of these best demonstrates the reflection of light?

• Looking through the glass of a large window
• Looking at an image formed on a silver spoon
• Looking at a lightbulb that is glowing
• Looking at a star on a clear night

Back

Looking at an image formed on a silver spoon

Front

When there is little oxygen in an environment, decaying plants and animals are likely to become solid carbon, which we also call coal. Coal would be most likely to form at—
Options:
- the bottom of a crater made by a meteorite.
- the bottom of a lake filled in by dirt and rocks.
- the top of a sand dune in a desert.
- the top of a high mountain.

Back

the bottom of a lake filled in by dirt and rocks.

Front

How are fossil fuels formed?

Back

Dead organisms are buried deep in the ground and are covered in sediment. Heat and pressure turn it into fossil fuels over time.