Science Queen

Electric current flows through a _________

• open switch

• closed switch

• open circuit

• closed circuit

Study the given circuit. A switch is used to control the

flow of electric current in a circuit. Which bulbs will

light up when the switches are in the position shown?

• Blue and Green bulbs

• Green and Red bulbs

• White and Blue bulbs

• Red and Blue bulbs

Look at the pictures below. Which among the circuits are open?

• only circuit i is an open circuit.

• circuits i and ii are open circuits.

• circuits, ii, and iii are open circuits.

• circuits i, ii, iii, and iv are open circuits.

What will happen when the switch moves to the 'Y' position?

• Bulb B will glow first.

• Bulb A will glow first.

• Bulb C will glow first.

• All bulbs will glow together.

What will happen to the other bulbs if bulb A does not glow?

• Bulb B will not glow as well.

• Both bulbs B and C will not glow.

• Bulb C will not glow as well.

• Both bulbs B and C will glow.

When the switch is brought in the 'ON' position, the bulbs A, B, and C do not glow. What could be the possible reason for it?

• The light bulbs are not of the same size.

• The wires are not of the same length.

• The cells are not of the same size.

• The wires are not connected properly.

A planet is a celestial body that orbits a star (in our cosmic

neighborhood, the Sun). It must be big enough to have enough gravity to force it into a spherical shape. It must be big enough that its gravity has cleared away any other objects of a similar size near its orbit

around the Sun. Which planet has an atmosphere of 95% Carbon

dioxide and a surface temperature that ranges from -140 to 20 °C?

• Earth

• Mercury

• Mars

• Venus

What do you call an icy, small Solar System body that warms and

begins to release gases when passing close to the Sun, a process called outgassing?

• comet

• moon

• meteor

• asteroid