Science Questions
Explore questions in the Science category that you can ask Spark.E!
The main greenhouse gases in the atmospheres of the terrestrial planets are
Suppose an earthquake occurs on an imaginary planet. Scientists on the other side of the planet detect primary waves but not secondary waves after the quake occurs. This observation suggests that
When an electron moves from a higher energy level to a lower energy level in an atom,
When you look at the sky on a dark night and see stars of different colors, which are the hottest?
Earth is composed of differentiated layers with distinctive attributes. Starting with the center and moving outward, indicate the proper sequence of the layers.
Match each telescope component with its ocular equivalent. You may need to use the scrollbar to view all of the categories.
Why are these planets so different? To answer this, we must start with an understanding of the processes that cause planetary surfaces to change: volcanism, tectonics, erosion, and impacts.
Based upon what you had learned about the cooling of planets before reading this article, identify the key factor that determined why the Moon cooled more quickly than Earth.
The dynamo theory says that a planet will have a strong magnetic field if it has
n the following diagram, label the gravitational force and velocity vector on the corresponding force vector.
Make a prediction: Do you expect the 16-inch telescope to have a larger or smaller light-gathering power than the 4-inch telescope?
The following graph shows the value of the average global temperature as far back as 1880. By approximately how many degrees Celsius has the average global temperature increased in the last 100 years?
If we wanted to increase the Hubble Space Telescope's altitude above Earth and keep it in a stable orbit, we also would need to
An empirical science is one that is based on
What does the change in the period with respect to the eccentricity tell you about the dependence of the period on the eccentricity?
For Earth, P2/A3 = 1.0 (in appropriate units). Suppose a new dwarf planet is discovered that is 14 times as far from the Sun as Earth is. For this planet
Imagine a planet moving in a perfectly circular orbit around the Sun. Is this planet experiencing acceleration?
You see the Moon rising, just as the Sun is setting. What phase is the Moon in?
A lunar eclipse occurs when the ________ shadow falls on the ________.
Does anything in the plot of the semimajor axis versus the period change when the eccentricity is changed?