SCIENCE QUIZ BEE DIFFICULT ROUND (HIGH SCHOOL DIVISION)

A certain radioactive element has a half-life of 1 hour – that means it reduces to half every 1 hour. If you start with a 1- g sample of the element at 12:00 noon., how much of this same element will be left at 3:00 PM?

• A. 0.5 g

• B. 0.25 g

• C. 0.125 g

• D. 0.0625 g

The given diagram shows a drone. When the switch is closed, the camera and propellers are turned on.

When a propeller stopped working, only the camera continued to work.

Which one of the following electrical circuit diagrams shows the connection of the camera and the propellers?

• 
• 
• 
• 

If you fill a glass to the brim with ice water and the ice melts, what will happen?

• A. The water in the glass will overflow as the ice turns into water

• B. The water level will remain unchanged as the ice melts

• C. The water level will drop slightly as the ice melts

• D. The water will change color

An experiment was performed to determine the effects of different types of fertilizer on the number of tomatoes produced by one type of tomato plant. What is the independent variable in this investigation?

• A. Color of plant

• B. Number of tomatoes

• C. Type of plant

• D. Type of fertilizer

In a Eukaryotic cell, it is known that the nucleus stores DNA. However, there is also an organelle which has DNA to regulate its metabolism process. Which organelle outside of the nucleus has DNA attached to it?

• A. Lysosome

• B. Golgi apparatus

• C. Endoplasmic reticulum

• D. Mitochondria

Which of the following is the correct scientific name for a dog?

• A.Felis Catus

• B. Felis catus

• C. Canis familiaris

• D. Canis Familiaris

Which of the following is NOT a solution?

• A. Aluminum

• B. Bronze

• C. Brass

• D. All of the above