Answer the following question given this paragraph: We know that the Universe is expanding. Astronomers have wondered if it is expanding fast enough to escape the pull of gravity. Would the Universe just expand forever? If it could not escape the pull of gravity, would it someday start to contract? This means it would eventually get squeezed together in a big crunch. This is the opposite of the Big Bang. Q: Astronomers have wondered if the universe is expanding fast enough to escape the pull of what? Choices: - kinetic energy - Coreolis effect - light - gravity A:
gravity
Answer the following question given this paragraph: The haploid life cycle ( Figure below ) is the simplest life cycle. It is found in many single-celled organisms. Organisms with a haploid life cycle spend the majority of their lives as haploid gametes. When the haploid gametes fuse, they form a diploid zygote. It quickly undergoes meiosis to produce more haploid gametes that repeat the life cycle. Q: What is the simplest life cycle? Choices: - diploid life cycle - binary life cycle - metamorphic cycle - haploid life cycle A:
haploid life cycle
Q: Answer the following question given this paragraph: With less ozone in the stratosphere, more UV rays reach the ground. More UV rays increase skin cancer rates. Just a 1 percent loss of ozone causes a 5 percent increase in skin cancer. More UV rays also harm plants and phytoplankton. As a result, they produce less food. This may affect entire ecosystems. Q: More uv rays reach the ground due to a decrease in what layer in the stratosphere? Choices: - troposphere - smog - gases - ozone A:
A: ozone
Question: Answer the following question given this paragraph: Normally, electric charge is transferred when electrons leave the outer orbits of the atoms of one body (leaving it positively charged) and move to the surface of another body (causing the new surface to gain a negative net charge). In a plasma all electrons are stripped from the atoms, leaving positively charged ions and free electrons. Q: What do extensive properties depend on the amount of? Choices: - experimental controls - sample temperature - independent variables - matter in a sample A:
Answer: matter in a sample
*Question*
Answer the following question given this paragraph: The amount of stress on a rock may be greater than the rock's strength. In that case, the rock will change and deform ( Figure below ). Deep within the Earth, the pressure is very great. A rock behaves like a stretched rubber band. When the stress stops, the rock goes back to its original shape. If more stress is applied to the rock, it bends and flows. It does not return to its original shape. Near the surface, if the stress continues, the rock will fracture and break. Q: What is applied to a rock to make it bend and flow? Choices: - phosphorus - weathering - acid - stress A:
**Answer**
stress
Q: Answer the following question given this paragraph: Electric charge is a physical property of particles or objects that causes them to attract or repel each other without touching. All electric charge is based on the protons and electrons in atoms. A proton has a positive electric charge, and an electron has a negative electric charge (see Figure below ). Q: What kind of charge does a proton have? Choices: - ionic - constant - negative - positive A:
A: positive