Reviewer Science: Exam 1st Semester 2019-2020

Which of the following organisms provides energy for more than one organism in this food web?

• bird

• plant

• fox

• mouse

Mrs. Kirsch's class conducted an experiment on plants. They put 2 plants by the window. The students put 10 ml of water every day on plant 1 only. At the end of two weeks, the results were recorded in a table.

What conclusion can students make from this experiment?

• Plants need water to make their own food.

• Plants do need the Sun.

• Plants need oxygen to grow.

• Plants consume other organisms to grown

What structure of this plant helps it get the most light?

• thin, and thorny stem

• yellow-orange fruit

• white flower

• greenish leaves

Which sentence describes the student's mistake when constructing the table?

• A man knows how to use bow and arrow

• A boy can read Chinese

• A whale knows how to do tricks on command

• A girl with blue eyes

What is the difference in the starting and ending temperature?

• 10

• 9

• 8

• 11

What is the difference in the starting and ending temperature?

• 6

• 9

• 8

• 7

What is the mass of the sea shell?

• 300

• 240

• 60

• 360

A student did not follow correctly the steps in an experiment and poured all of the 25 grams of slat into her beaker of water. She wants to start all over and perform her experiment correctly. Which of the following would the student use to separate the salt from the water?

• add more water

• pour the water through a strainer to collect the salt

• heat the solution to evaporate the water

• use a magnet to pick out the salt

Which is the best example of learned behavior?

• a person sneezes while cooking with peppe

• a flock of birds migrating south for the winter

• a cat running to the kitchen when it hears the can opener

• a butterfly breaking out of its chrysalis after transforming

Which of the following describes a solution, with the correct justification?

• a glass of sand and water, because sand sits at the bottom of the water

• a container of pepper and iron, because iron is magnetic

• a glass of salt and water, because the salt can be dissolved in water

• a bag of rocks and salt, because the rocks and salt are mixed together