7.9AB Sustaining Life on and out of Earth

Front

Which of the following characteristics of Jupiter best explains why Jupiter does not support life, while Earth does? Jupiter -
has four moons that orbit the planet.
has virtually no water on the surface.
rotates on its axis once every 10 hours.
orbits the Sun once every 12 years.

Back

has virtually no water on the surface.

Front

Which characteristic of a planet greatly influences its temperature suitability for life? Options: The amount of its gravitational force, The number and size of active volcanoes, The tilt of the axis of rotation of the planet, The distance from the Sun of its orbit.

Back

The distance from the Sun of its orbit.

Front

Which of the following data could be collected about a planet in a distant planetary system, which might give scientists information about whether or not life exists on that planet?
The number of other planets in the system.
How long the planet takes to rotate.
The orbit length of the planet.
The presence of an atmospheric ozone layer.

Back

The presence of an atmospheric ozone layer.

Front

If Earth were much smaller than it is now, it would not support life because it would not have enough mass to -

Back

have sufficient gravity to hold an atmosphere.

Front

Ozone contributes to supporting life on earth by blocking -

Back

ultraviolet light.

Front

Which of the following discoveries about Mars suggests conditions that may have once supported life? Mars has – the tallest mountain in the solar system, two moons orbiting the planet, only a small amount of atmosphere, small amounts of water in the soil.

Back

small amounts of water in the soil.

Front

The habitable zone for the star in the diagram shown is between 200 and 250 million km away from the star. Which of the planets shown in the diagram can support life?

Back

Planet Y

Front

Space stations require an oxygen system because the atmosphere in space -

Back

is airless.

Front

Which of the following accommodations on the space station is used by astronauts to combat the effects of microgravity on their bones? Special handles, Velcro® straps, Exercise equipment, Oxygen system

Back

Exercise equipment

Front

Radios are not required for astronauts to talk to each other when they are in the same room inside the space station because –

Back

the space station is filled with air that carries sound waves.