G3 - Scientists at Work

Kristin wants to record the growth of a bean plant. Which measurement will be MOST useful?

• height of the plant
• amount of water given 
• weight of the plant in soil 
• number of hours of sunlight 

What can you infer about the reason the grass did not grow?

• Paula did not use good soil. 
• The grass needs more water.
• The grass did not grow well in the sunlight.
• The grass did not grow well in the shade.

• It was lost.
• It has a shipping label.
• It is covered with paper.
• It was found in the trash.

Which meaning do scientists use for the word investigate?

• to use a hand lens 
• to only ask questions 
• to use a planned way to find answers to questions 
• to find answers by guessing 

The way that air flows under, over, and around a car affects how fast it can travel. Jason builds a model race car. Which feature of his car will have the GREATEST effect on its speed?

• color, to see it well 
• mirrors, to look good 
• glue, to help it weigh less 
• shape, to affect air flow

Mark is interested in what different animals eat in a forest. Which should he use in his investigation?

• a model of a deer 
• a chart of weather patterns
• a table showing forest animals
• a table showing food for animals in a forest

• bear
• deer
• moose
• elk

Lupe wants to measure the time it takes for five mice to run through a maze. What is the BEST way for noting the precise time of each mouse's run?

• using a ruler to measure the distance each mouse runs 
• counting from when each mouse starts to when it finishes 
• starting a stopwatch when each mouse starts and stopping it when it finishes
• looking at the clock in the classroom while each mouse runs through the maze 

• 2 mm
• 2 cm
• 4 cm
• 2 km

Which tool would be the BEST to use for seeing very tiny living things in the water?

• hand lens
• microscope
• telescope
• binoculars