Semester Flashcardziz

Front

Which of these statements correctly describes a benefit of ozone to people? A. It clears harmful pollutants from the air. B. It enhances the skin’s production of vitamin D. C. It decreases the chance of developing skin cancer. D. It decreases the probability of developing respiratory problems.

Back

It decreases the chance of developing skin cancer.

Front

What Doppler shift would an astronomer notice for the spectral light from a galaxy moving away from Earth?

Back

lower frequency and longer wavelengths

Front

What distinguishes isotopes of the same element?

Back

Number of neutrons

Front

What is the main advantage of using geothermal energy? A. It is abundant everywhere, B. It has low emissions, C. It is the cheapest form of energy, D. It requires no technology

Back

It has low emissions

Front

Which of these separates the outer planets from the inner planets? Options: a. The Kuiper Belt, b. The asteroid belt, c. The Great Red Spot, d. A large magnetic field

Back

The asteroid belt

Front

Which law describes the speed at which objects travel at different points in their orbits? Options: a. Law of ellipses, b. Law of periods, c. Law of eccentricity, d. Law of equal areas

Back

Law of equal areas

Front

Kepler’s third law describes the relationship between the average distance of a planet from the sun and which property of the planet’s motion?

Back

Orbital period

Front

According to Kepler’s first law, the orbit of a planet is an ellipse with what object at or near the focus?

Back

Its star.

Front

What would happen to the surface temperature on Earth if large amounts of carbon dioxide were removed from the atmosphere?

Back

Surface temperatures would decrease.

Front

What do the forces of gravity between Earth and the moon cause? Options: a. Orbits, b. Tides, c. Waning, d. Eclipses

Back

Tides