HAVARD Unit Test 2 Part 2

What is the best question for this investigation?

• What is the effect of temperature on the sprouting rate of seeds?

• What is the best soil in sprouting seeds?

• What is the effect of sunlight in the sprouting rate of seeds?

• Which seed sprout the fastest?

Which group of items could be used to investigate the strength of different magnets?

• Magnets, pennies, rulers

• Magnets, paper clips, rulers

• Magnets, hand lenses, graduated cylinder

• Magnets, water, aluminum foil

The chart below shows the results of a student investigation. What testable question were the students trying to answer?

• How does the mass of the toy car affect the distance it travels?

• How does the ramp affect the distance the toy car travel?

• What is the mass of the toy car?

• What is the speed of the toy car?

Which of the following statements is true about the picture above?

.

• The bolt is more dense than the maple syrup.

• The maple syrup is more dense than the bolt.

• The bolt is less dense than water

• The water is more dense than maple syrup

Two objects are placed in water. One sinks and the other floats. Which of the following is the most reasonable conclusion that can be drawn from this data?

• One object is magnetic, the other one is not.

• One object is a solid, the other one is liquid

• One object has greater density than the other.

• One object is much larger than the other.

Which of the following is magnetic and a good conductor of heat?

• Iron nail

• Aluminum foil

• Copper wire

• Plastic chip

The following will make an incomplete circuit complete EXCEPT---

• washer

• aluminum foil

• cork

• gold ring

The following describes gas EXCEPT---

• Invisible

• No definite shape

• No definite volume

• Has definite shape.

The process of changing gas to liquid is called--

• evaporation

• condensation

• melting

• freezing

The windmill uses which form of energy?

• electrical

• mechanical

• light

• thermal