Science Quiz

Miguel was conducting an experiment. He wrote the following sentences in his notebook: The starting temperature of the water was 10 degrees Celsius. An object weighing 5 grams was placed in the water. The temperature of the water increased to 15 degrees. The object must have been hotter than 10 degrees. In which sentence did Miguel make an inference?

1       The starting temperature of the water was 10 degrees Celsius.

2       An object weighing 5 grams was placed in the water.

3       The temperature of the water increased to 15 degrees.

4       The object must have been hotter than 10 degrees.

 

• SENTENCE 1

• SENTENCE 2

• SENTENCE 3

• SENTENCE 4

What is a common use of mineral graphite?

• to make glass

• as a source of iron

• to make pencil leads

• as a household cleaner

Antonia is testing the properties of block A. She puts block A on top of a hot metal block and then touches the block A with her finger. She keeps her finger on the block A for several minutes, but block A still does not get hot. What can Antonia conclude about block A?

• It is a good conductor.

• It is a poor conductor.

• It is highly magnetic.

• It is nonmagnetic.

Which statement best describes the part of the atom that is shown by the arrow?

• It is an electron, and it has a negative charge.

• It is an electron, and it has a positive charge.

• It is a proton, and it has a negative charge.

• It is a proton, and it has a positive charge.

DNA technology has improved greatly in the last twenty years. Which task has been made easier by the development of DNA technology?

• identifying genetic disorders

• determining the parts of an atom

• observing distant objects in space

• making very accurate measurements

What happens when the temperature of water changes from 10° Celsius to −10° Celsius?

• The water changes from a solid into a gas.

• The water changes from a liquid into a gas.

• The water changes from a liquid into a solid.

• The water changes from a solid into a liquid.

What is the role of decomposers in a food chain?

• They consume other organisms.

• They break down dead organic matter.

• They use the Sun's energy to make food.

• They convert inorganic matter into organic matter.

Four friends raced in the 100-meter dash. How many of the friends ran faster than 5 meters per second?

• One

• Two

• Three

• Four

Maria grew four plants in an experiment about plant growth. The table shows the design and results of Maria's experiment. What was the independent variable in this investigation?

• the amount that each plant grew

• the amount of food each plant received

• the amount of water each plant received

• the amount of sunlight each plant received

Which object is needed to make the bulb light?

 

• Copper wire

• Dry cells   

• Switch

• Another bulb