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Physical Science7
Exam Prep for Physcial Science portion
| Question | Answer |
|---|---|
| The distance and direction between starting and ending positions is known as | displacement |
| Distance divided by time is the formula for | speed |
| Displacement divided by time is the formula for | velocity |
| It takes a swimmer 5 seconds to swim a distance of 10 meters. What is the swimmer’s average speed? | 2 m/s |
| Which of the following includes direction? | velocity |
| There is a street that goes through my hometown that is 30 miles long. If you take the highway, you will only travel 20 miles north to go through my town. What is the displacement through my town? | 20 miles north |
| What is the distance through my town? | 30 miles |
| Can the displacement between two places ever be greater than the distance between two places? | no |
| A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock is 2 cm3, and the mass is 4 g. What is the density of the rock? | 2 |
| ______________________ is a characteristic that can be observed without changing or trying to change the composition of a substance. | physical property |
| _____________________ is a characteristic that cannot be observed without changing the composition of the substance. | chemical property |
| This is a an example of a physical property that has to do with mass and volume. | density |
| ________________________ is the amount of mass in a given volume. | density |
| _______________________ is the amount of space in an object. | volume |
| _______________________ is the amount of matter in an object. | mass |
| The region surrounding the nucleus in which electrons travel is the | electron cloud |
| The number of protons in the nucleus of an atom of an element is called the | atomic number |
| The number of neutrons in a nucleus plus the number of protons is called the | mass number |
| An atom of an element with a different number of neutrons is called a(n) | isotope |
| A wavelength is the distance between one _____________ on a wave and the nearest _____________ just like it. | point, point |
| Frequency is the number of _______ that pass a given point in one second, measured in _____. | wavelengths, hertz |
| An electromagnetic wave is a _________ wave. | transverse |
| A wave with a high frequency has a __________ wavelength. | short |
| A high frequency wave has a(n) ________ amount of energy. | large |
| What is the frequency of a wave that has 6 waves over a period of 2 seconds? | 3 hertz |
| What are the three main stages of the amphibian life cycle? | egg, tadpole, adult |
| In incomplete metamorphosis, the _________in the organism from stage to stage are not as ____________as they are in complete metamorphosis. | changes, dramatic |
| Also, in complete metamorphosis, the insect looks very ___________from the _________at each stage. | different, adult |
| Incomplete metamorphosis has ________developmental stages:________, __________ and _________. | three, egg, nymph, adult |
| Complete metamorphosis has _________ stages: ________, ________, _________ and _________. | four, egg, larva, pupa, adult |
| Flowering plants (angiosperms) have __________grains that contain the male sperm. They are found in the ________ of the flower. | pollen, anther |
| Flowering plants have female cells that are in the __________, which is found in the _____________. | ovule, ovary |
| Monocots have _______cotyledon that grows from the seeds; dicots have _________. | one, two |
| Monocot flower parts are in multiples of ________; dicot flower parts are in multiples of _________ or _________. | three, four, five |
| Leaf veins in monocots are __________, leaf veins in dicots are ___________. | parallel, branched |
| The reproductive structures in non-flowering plants (gymnosperms) are small cones that contain _________ and large cones that contain ____________. | pollen, seeds |
| The life cycle amphibians and insects both start with a fertilized _________. | egg |
| Both amphibians and insects goes through ____________________ in order to become an adult. | metamorphosis |
| Insects and amphibians differ in the number of __________in their metamorphosis. | stages |
| Insects have 4 stages: an _______, _______ or nymph, ________, and ___________ stage. | egg, larva, pupa, adult |
| Amphibians have 3 stages: an _________, _________, and ________ stage. | egg, tadpole, adult |
| Insects have two types of metamorphosis depending on the type of insect, ________________ metamorphosis and _________________ metamorphosis. | complete, incomplete |
| Unfertilized honeybee eggs become _________, or drones. | males |
| Female honeybees hatch from ______________ eggs. | fertilized |
| The egg is fertilized ___________ the female by the male sperm in birds, mammals, and reptiles. | inside |
| The egg is fertilized ___________ the female by the male sperm in amphibians. | outside |
| Reptile eggs are ___________ and bird eggs are __________. This protects them from weather and things in the environment like predators. | rubbery, hard |
| In reptiles and birds, development happens inside the egg after it is __________ by the female. Then the young ____________. | laid, hatches |
| A mammalian egg develops into an embryo ____________ the female, where it is protected. Then the young is ____________. | inside, born |
| Only in ________, ____________, and ____________ do the young often look like the adults when they are hatched or born. | birds, reptiles, mammals |
| ________________and ______________ produce young that look very diffeerent from adults. | insects, amphibians |
| In amphibians, the ___________ stage looks different from the adult. | tadpole |
| In insects, the ___________ /____________ and ___________ stages all look different from the adult. | larva/nymph, pupa |
Created by:
mary352
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