DIFFICULT ROUND (Science Quiz Bee 2023)

Pamela set up the following circuits with 4 different materials, A, B, C, and D, and recorded her results. Which of the following arrangements will allow the bulb to light up?

• A. Circuit X only

• B. Circuit Z only

• C. Circuit X and Y only

• D. Circuit Y and Z only

The appearance of seeds in an experiment where 4 similar cups with an

    equal number of seeds placed under different conditions is shown in the table. What can be concluded from the results of the experiment?

• A. Soil is needed for germination.

• B. Water is needed for germination.

• C. Light and water are needed for germination.

• D. Air, warmth and water are needed for germination.

The diagram shows the parents of 4 siblings. The four siblings, Ally, Cain, Ben, and Dan gave the following statements:

Ally: I have black eyes like Aunt Zoe. I must have inherited this from her.

Cain: I inherited Father’s curly hair.

Ben: I only inherited genes from Father since I look like him.

Dan: I have brown hair. I must have inherited this from my mother.

Which of the siblings are correct?

• A. Aly and Ben

• B. Ben and Cain

• C. Cain and Dan

• D. Aly, Cain, and Dan

Two groups of people were playing “tug of war” as shown below. Both teams had to pull at opposite ends of a rope. The winning team would be the one that managed to pull the center ribbon across a central line towards themselves. Which of the following explain why the games was not played fairly?

1. 1. The number of participants in each team was different.

2. 2. The frictional force between the shoes and the ground was different.

3. 3. The difference in the total mass of each team affected the force exerted on the rope.

• A. 1 and 2 only

• B. 1 and 3 only

• C. 2 and 3 only

• D. 1, 2, and 3 only

Shirleen carried out an experiment as shown in the diagram. A test tube containing water at 20°C was placed in the center of a  beaker with some ice cubes. The beaker was then left in a room for some time. Based on the experiment, which of the following are correct?

• A. I and II only

• B. I and IV only

• C. II and III only

• D. III and IV only

The picture shows several children sitting on a carnival ride. During one part of the ride, the children in their seats are dropped from a certain height. S, T, U, and V represent the direction of possible forces acting on the children during this part of the ride. Which arrows show the direction of gravity and friction acting on the children respectively when the seats drop?

• A. Direction of Gravity - U, Direction of Friction - S

• B. Direction of Gravity - U, Direction of Friction - V

• C. Direction of Gravity - S, Direction of Friction - T

• D. Direction of Gravity - S, Direction of Friction - V

Four objects of different masses, P, Q, R, and S, are hung above the ground using strings of different lengths as shown in the diagram. Which object has the most potential energy?

• A. P

• B. Q

• C. R

• D. S