Scientific Investigation

The graph shows what happened when a candle was burned in different jars. The results of this experiment show that the bigger the jar, the

• longer the candle burned
• higher the candle's flame
• brighter the candle's flame
• faster the candle melted

The picture shows the development of a delta over a two-year period. According to this information, about how far did the delta reach into the ocean after 1997?

• 0.1 km
• 1 km
• 1.5 km
• 0.5 km

The picture shows a magnified view of a tick on a penny. About how long is the tick?

• 4 meters
• 2 kilometers
• 1 millimeter
• 10 centimeters

Which of these is needed to measure the mass of a rock?

• A metric ruler
• A balance
• An anemometer
• A barometer

A student uses the equipment shown above to study which liquid is the thickest. What information is the most appropriate to record?

• The height of the graduated cylinders
• The time it takes for each marble to hit the bottom
• The size and mass of each of the marbles
• The volume of each of the liquids in the cylinders

Which of these units would be best to use to measure the amount of water in a test tube?

• Meters
• Kilograms
• Milliliters
• Seconds

Students must conduct an experiment in which they find out how long a rubber ball bounces before it comes to a stop. Which unit would be best for recording this information?

• Gram
• Degrees Celsius
• Second
• Meter

What is the length of the tadpole?

• 4.0 cm
• 3.1 cm
• 3.5 cm
• 2.8 cm

Dennis conducted an experiment to determine which of his classmates could throw a ball the farthest. He recorded his results in the above table.Which student's measurement is an unusual result?

• 2
• 5
• 1
• 4

From the chart shown above, you can predict that for the year 2000, Brazil's population will -

• have topped 250 million
• continue its steady rise
• be a flat even line with 1995
• show a heavy drop