5 Lies You Were Told in School

Is there gravity in space?

• Yes, space is full of gravity.

• No, space is a vacuum with no gravity.

• Gravity only exists near large planets.

• Gravity only affects objects that are not moving.

What two main factors determine the strength of the gravitational force between two objects?

• Their color and temperature.

• Their mass and the distance between them.

• Their speed and direction of movement.

• Their electrical charge and magnetic field.

Why do astronauts on the International Space Station (ISS) appear to be weightless?

• There is no gravity at the altitude of the ISS.

• The ISS is moving so fast that gravity cannot affect it.

• They are constantly falling around Earth, creating a feeling of weightlessness.

• The ISS generates an artificial gravity field that cancels out Earth's gravity.

Which atomic model described electrons as being embedded within a positively charged sphere?

• The Planetary Model

• The Rutherford Model

• The Plum Pudding Model

• The Bohr Model

What was a key idea in Niels Bohr's model of the atom?

• Electrons orbit the nucleus randomly.

• Electrons can only orbit at specific energy levels.

• Atoms are mostly empty space.

• Electrons are found in a cloud around the nucleus.

What subatomic particle was discovered by James Chadwick and helped explain why the nucleus was so heavy?

• Proton

• Electron

• Neutron

• Photon

What is a common misconception about human urine?

• It is always yellow.

• It is completely sterile.

• It helps heal wounds.

• It is mostly water.

Why might traditional lab tests show a healthy person's urine as sterile, even if it contains bacteria?

• The tests were designed to kill all bacteria.

• The threshold for diagnosing infection was very high.

• Healthy urine naturally repels bacteria.

• Bacteria in healthy urine cannot grow in a lab.