Why is there debate by scientists over whether virus' are alive or not alive ?
because they are hard to kill
because they can only live if they are on a host
because a vaccine will kill them easily
because there are very few of them
Which two parts are in a plant cell but not in animal cells?
cell membrane and chloroplasts
cell wall and chloroplasts
cell wall and chlorophyll
chloroplasts and nucleus
Which reproduces by seed
moss
fern
liverwort
pear tree
Why does a plant cell have chloroplasts?
plant cells are consumers
plant cells need support
to control what enters and exits the cell
it is where photosynthesis takes place
Which is a physical property of matter?
the ability to rust
the ability to dissolve
the ability to burn
the ability to decay
What do we call trees that lose their leaves in the winter?
palm
evergreen
conifer
deciduous
matter without a definite volume or shape
solid
liquid
plasma
gas
A material through which electricity travels easily
conductor
magnet
generator
insulator
Which are insulators?
glass and rubber
rubber and metal
plastic and metal
metal and wood
Which of these correctly describes how water changes state?
water vapor evaporates to form liquid water
Ice condenses to form liquid water
liquid water melts to form ice
liquid water boils to form water vapor
How does a fern reproduce?
seeds
hybrid
spores
saplings
Weathering by wind, water, and ice produces
solution
deposition
sediment
Volcanoes and earthquakes are effects of plate tectonics. What does the theory of plate tectonics state?
Earth's inner core causes changes in the crust
Earth's outer core is liquid and the inner core is solid
Earth's mantle is solid
Earth's crust is divided into parts that move
The build up of electric charges on an object
static electricity
conductor
current electricity
generator
A material that resists the movement of electric current through it
electromagnet
generator
conductor
insulator
WhichWhich question can be asked to learn about the inherited physical traits of the cow?
Has the cow been fed today?
Is the cow tame enough to pet
How old is the cow?
Why does the cow have brown fur?
Which is cold blooded
lizard
eagle
bat
camel
Ben lights a match to start a fire. Which is NOT evidence of a chemical change that occurs?
the heat coming off of the flame
the smell coming off of the lit match
the match turning black as it burns
the shape of the match
Which frequently used source of mechanical energy will eventually run out?
solar energy
coal
running water
wind
An object that attracts iron and a few other metals
electric motor
magnet
insulator
generator
Which characteristics help scientists classify an organism as an animal?
It is made up of a single cell and makes its own food
It is made up of many cells and feeds on other living things
It is made up of may cells and makes its own food
It is made up of many cells and gets food from the sun
Which is an invertebrate?
fish
rabbit
snake
ladybug
Which is an example of deposition
sediment is carried down the stream
water washes the sediment from the mountain
wind and rain cause the bicycle to rust
wind drops sand of a deserted beach forming a dune
An opening from which lava erupts is a(n)
magma
earthquake
volcano
Invertebrates do not have a
heart
backbone
backbone
stomach
floods cause rock to slide from the top of the mountain
erosion
weathering
fire
deposition
One cells organisms
unicellular
multicellular
cellulose
What materials are needed to make a complete closed circuit?
load, connector, switch
load, switch, wire
load, connector, source
connector, source, switch
What are the two ways that plants reproduce?
seeds and spores
cones and seeds
seeds and sprouts
spores and ferns
Riding a bike is an example of
learned behavior
instinct
instinctual behavior
inherited trait
Inherited behavior in animals
instinct
learned behavior
inherited trait
consumer
What is an example of microorganisms that are beneficial?
causing food poisoning
athletes foot
red tide
used to make yogurt and cheese
Matter that has a definite volume but no definite shape
plasma
gas
liquid
solid
Which plants produce seeds in cones?
deciduous
apple tree
conifer
fern
Has a backbone, four legs and long tail, scales on its body
bird
mammal
amphibian
reptile
The breaking down of rock at the earth's surface
constructive
weathering
erosion
deposition
A path along which electric charges flow
current
static electricity
insulator
circuit
The process of wearing away rock is known as
deposition
erosion
hurricane
weathering