What happens when an atom undergoes radioactive decay?

The energy or matter in an atomic nucleus is reduced.

Which conditions on Earth support the biosphere?

liquid water, oxygen/carbon dioxide in atmosphere

Why do scientists think the outer planets have cores made from rock and a great deal of ice?

They formed too far from the sun to have liquid water.

How does the size of the solar system compare to the Milky Way galaxy?

The solar system is much smaller

What effect did the solar wind and heat have on the composition of the inner planets ?

They lost much of their lighter elements.

Why are radioactive substances used by scientists to measure the age of Earth?

They give off radiation at a predictable, steady rate.

Which planet is most like Earth?

Mars has an atmosphere and moderate temperatures.

Why is Mars the most likely destination for manned voyages and surface exploration?

Mars has some conditions similar to Earth

studbud

Solar System

16 termsStudBud Administration1,267 plays

This covers Standard 1 Objective 2 of the Utah State Earth Systems core.

Flashcards16 cardsFPractice quizPHost liveL

Questions 16

Answers

1
Which solar system object is the largest?
Earth
Jupiter
Neptune
Sun
2
What do Earth’s atmosphere and the distance Earth is from the sun combine to create?
moderate temperatures
an oxygen rich atmosphere
magnetic north pole
moving continents
3
What happens when an atom undergoes radioactive decay?
Two atomic nuclei fuse to form a new atomic structure.
The atoms break away from the molecules they are part of.
Radioactive energy is added into an atomic nucleus.
The energy or matter in an atomic nucleus is reduced.
4
Which conditions on Earth support the biosphere?
liquid water, oxygen/carbon dioxide in atmosphere
365 day year, 24 hour day
molten core, semi-solid mantle layer
rotation at the equator, silica rich crust
5
Why do scientists think the outer planets have cores made from rock and a great deal of ice?
The heavier elements were vaporized as the planets formed.
Hydrogen and oxygen in water are the most abundant elements
Large chunks of ice from Earth were sent into space.
They formed too far from the sun to have liquid water.
6
What are the most abundant atmospheric gases found on the outer planets?
neon and argon
nitrogen and methane
carbon dioxide and oxygen
hydrogen and helium
7
How does the size of the solar system compare to the Milky Way galaxy?
The solar system is about one half the size
The solar system is much smaller
The solar system is the same size
The solar system is larger
8
How large is Earth in a solar system model where the sun is the size of a marble?
a grain of sand
a pencil eraser
barely visible
a smaller marble
9
What effect did the solar wind and heat have on the composition of the inner planets ?
They lost much of the heavier elements.
They lost much of their lighter elements.
They gained most of their heavier elements.
They gained most of their lighter elements.
10
Why are radioactive substances used by scientists to measure the age of Earth?
They can be compared to other substances in the rock.
They give off radiation at a predictable, steady rate.
They are only found in Earth’s oldest rocks.
They are found in all solid substances on Earth.
11
Which planet is most like Earth?
Saturn has the same gases and amount of gravity.
Mercury has the same rocky crustal material.
Mars has an atmosphere and moderate temperatures.
Venus is nearly the same size and atmospheric pressure.
12
Why is Mars the most likely destination for manned voyages and surface exploration?
Mars has life making it a more interesting destination
Mars has some conditions similar to Earth
Mars has two moons to explore
Earth is closest to Mars
13
How large an area is needed to create a solar system that includes a sun the size of a marble?
a classroom
a city
a state
a playing field
14
How old is a rock if only 25% of the Element X remains?
1.3 billion years
2.6 billion years
1 billion years
5.2 billion years
15
How is the age of the solar system estimated by scientists?
comparing fossil types
dating radioactive elements
measuring expansion of stars
sequencing rock layers
16
On the scale of this picture, how large would our solar system be?
as big as a period in a sentence
a tiny dot
he size of this “o”
The size of the light area in the center of the picture.

Solar System Flashcards | StudBud