What is one benefit of exercise for teenagers?

Question 11 options:

Stronger bones

More injuries

Increased chance of heart disease

Weakened immune system

Explain the difference between speed and velocity and indicate if these are scalar or vector quantities

Which of the following statements is true? 1. The 2s orbital in the hydrogen atom is larger than the 3s orbital also in the hydrogen atom. 2. The hydrogen atom has quantized energy levels. 3.

Name and describe the phase change that occurs when dry ice is placed in an open container at room temperature.

What does it mean to say that current and resistance in a circuit are inversely related?

What would be a good indicator of the solubility of a substance in a solute? A. whether the substance is a solid a liquid or a gas B. the amount of substance needed to form a saturated solution C. the density of the substance D.

A 50.6 g ball of copper has a net charge of 1.6 µc. what fraction of the copper's electrons have been removed? (each copper atom has 29 protons, and copper has an atomic mass of 63.5.

Which is a tool used by scientists to determine the composition of objects? a hologram a spectrometer a wave front a prism

If the Sun were scaled down to the size of a grapefruit, about how far would you have to walk from our classroom to reach Alpha Centauri, the closest star?

What happens to the density of the mass decreases but the volume remains the same?

An interstate highway loop meets the primary route at both ends. the first digit of its route number is always