What force pulls objects towards the Earth?

Gravity is the force that pulls objects towards the Earth.

Which material is a good conductor of electricity?

Copper is a good conductor of electricity due to its free electrons.

What causes a rainbow to appear in the sky?

A rainbow appears due to the refraction and dispersion of light in water droplets.

What is the unit used to measure distance?

The unit used to measure distance is the meter.

What happens when you mix red and blue light?

Mixing red and blue light produces purple light.

Which device is used to measure temperature?

A thermometer is used to measure temperature.