2018 Grade 8 Intermediate-Level Science Test Questions 21-30 Question Preview (ID: 59901)

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Which set of Earth components is arranged in order from solid to liquid to gas?

a) hydrosphere, atmosphere, lithosphere

b) hydrosphere, lithosphere, atmosphere

c) lithosphere, atmosphere, hydrosphere

d) lithosphere, hydrosphere, atmosphere

Which form of energy is being converted to electrical energy by the batteries in the flashlight?

a) chemical

b) nuclear

c) solar

d) sound

Which two gases, when released into the atmosphere, are believed to contribute most to global warming?

a) nitrogen and oxygen

b) nitrogen and carbon dioxide

c) methane and oxygen

d) methane and carbon dioxide

The motions of comets and asteroids in our solar system are predictable because they are

a) smaller than planets

b) nearly spherical in shape

c) in orbit around the Sun

d) controlled by Earth’s gravity

Approximately how long does it take for an observer on Earth to view a complete cycle of Moon phases?

a) 12 hours

b) 24 hours

c) 1 month

d) 1 year

Which graph best represents the percentage of the lighted side of the Moon that can be seen by an observer in the northern hemisphere when the Moon is at the positions shown?

a) 1

b) 2

c) 3

d) 4

Which weather instrument is used to measure wind speed?

a) 1

b) 2

c) 3

d) 4

For which planet is the length of the planet’s day longer than the planet’s year?

a) Mercury

b) Venus

c) Earth

d) Mars

Which human activity would help reduce the amount of carbon dioxide in the atmosphere?

a) decrease the burning of fossil fuels

b) decrease the number of recycling programs

c) increase the human population

d) increase the number of cars being driven

Which environmental problem is most likely indicated by the sign?

a) toxic waste

b) global warming

c) ozone depletion

d) species extinction

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