Iwill mark as !

1.dr. perez is part of a team of researchers who are working on designing and building a probe to study solar flares. what condition must the probe meet? it must be able to travel over 300,000,000 km to reach the sun. it must be able to withstand a temperature of up to 20 million degrees celsius. it must be able to penetrate to the core since solar flares originate there. it must be able to remain in the sun for at least eleven years.
2.taden has found a table of the atmospheric layers of the sun. however, he can’t make out the names of the layers in the chart.

what are the names of the sun’s layers described in columns a, b, and c?

a: corona; b: photosphere; c: chromosphere
a: core; b: chromosphere; c: photosphere
a: chromosphere; b: corona; c: core
a: photosphere; b: chromosphere; c: corona
3.what are the dark areas on the surface of the sun?

solar flares
sunspots
prominences
solar winds
4.the distance between planets varies as they move in their orbits. the minimum distance from the earth to mars is about 0.35 au. about how many kilometers is that?

15,000,000 km
25,000,000 km
55,000,000 km
70,000,000 km
5.in order to recreate the process of energy production that takes place in the sun, scientists use

hydrogen gas and add heat and pressure.
helium gas and remove heat and pressure.
hydrogen gas, add heat, and remove pressure.
helium gas, remove heat, and add pressure.
6.the local newspaper has published the passage below.

last week, scientists released incredible images of aurora australis as seen from the hubble telescope. the hubble telescope was placed in orbit in 1990 by the space shuttle and has since delivered the sharpest images we have of our planet, our galaxy, and the universe. the images delivered last week show the beautiful display of lights all over the equator. these lights are the result of the solar activity known as solar wind. traces of solar wind reach well beyond earth and have been detected as far as saturn.

which statement in the news passage above is inaccurate?

the aurora australis cannot be seen from space.
the hubble telescope does not orbit our planet.
the aurora australis do not occur over the equator.
solar winds do not reach well beyond our planet.
7.malika is writing an essay about the sun. below is the first paragraph in the essay.

the sun is an average-size star that is located at the center of the solar system. this hot, glowing ball of gas has a diameter of 1,393,000 km. this means 109 earths would fit side by side across the diameter of the sun. at the surface, the sun’s temperature is about 550 degrees celsius. earth is located just under 150 million kilometers from the sun.

malika quickly realizes this paragraph contains an error. which statement identifies the error?

the sun is a large star, not an average-size star.
the sun is not a glowing ball of gas—it is solid.
the sun’s surface temperature is about 5500 degrees celsius.
earth is located over 300 million kilometers from the sun.
8.suppose a scientist doing an experiment in nuclear fusion starts out with twelve atoms. how many atoms will most likely result from the experiment?

one, because atoms combine during nuclear fusion
six, because atoms combine during nuclear fusion
twelve, because atoms change but their number does not during nuclear fusion
twenty four, because each atom involved is split into two during nuclear fusion
9.where in the sun does the production of energy take place?

the corona
the photosphere
the core
the chromosphere
10.scientists in a lab are working on a series of experiments that involve colliding two or more atomic nuclei at very high speeds to form a new type of atomic nucleus. what are they working on?

convection
radiation
nuclear fusion
nuclear fission