WorksheetsReview for Quarter 2 HCE
Total questions: 20
Worksheet time: 21mins
What is the BEST way for a scientist to begin an investigation on a population of deer?
typing results into a computer
intuition
writing facts in a field notebook
observing the deer in their habitat
Students researched monkeys at a zoo they recorded traits and behaviors. This investigation activity is best described as
controlling
hypothesizing
observing
inferring
A researcher develops a new type of corn plant. She thinks that the new type of corn plant is better protected from insect pests than other types of corn. She shares the results of her investigation. Which is the BEST reason for sharing her results?
It will make the researcher an expert?
It allows the researcher to change her results later.
It will prove that the research conducted the investigation herself.
It allows other researchers to repeat the investigation.
What should a scientist do to help make sure the results of an experiment are unbiased?
keep the results a secret
do the math without a calculator
change all the variables in the experiment
ask other scientists to attempt to reproduce the results
Solar radiation has a part in the water cycle by
affecting ocean tides
helping in the absorption of groundwater
determining the type of clouds formed
changing water to a vapor
The boiling of water results in a physical change in matter from a
solid to liquid
gas to solid
solid to gas
liquid to gas
A doorbell circuit converts electrical energy into mechanical energy. The mechanical energy is in the form of vibrations that ultimately produce
chemical energy
thermal energy
radiant energy
sound energy
In addition to light, which form of energy does a light bulb produce?
thermal energy
chemical
magnetic
mechanical
When making breakfast, a student mixed some berries, cereal, milk, and sugar in a bowl.
which two substances form a solution when mixed in the bowl?
milk and sugar
cereal and milk
sugar and berries
berries and cereal
Campers burned logs at a campfire.
How would the campers know that a chemical change has taken place?
the logs changed shape
the rocks glowed when heated
the wood became a different substance
the ground absorbed heat from the coals.
which BEST describes the energy conversion by a household toaster?
electrical to heat
heat to chemical
electrical to chemical
heat to mechanical
Christina kicks a ball. The ball moves faster when she kicks it on the concrete sidewalk than when she kicks it on the grass. Why does the ball travel slower on the grass than the sidewalk?
the grass has more friction
the grass attracts more wind
the grass has a higher temperature
the grass increases Earth's gravity
In the water cycle, where does water go after reaching the ocean?
the water flows into a river
the water falls from the clouds
the water sinks to the ocean floor
the water changes into water vapor
A conducting wire wrapped in plastic protects the user because the plastic
keeps the wire cool
allows heat to move freely
is a good electrical insulator
has magnetic properties
Which temperature would indicate snow for a city?
12 degrees Fahrenheit, 70% chance of precipitation
8 degrees Fahrenheit, 0% chance of precipitation
64 degrees Fahrenheit , 20% chance of precipitation
50 degrees Fahrenheit, 90% chance of precipation
How are physical properties of a solid and the physical properties of a liquid alike?
both have a definite shape
both have an indefinite shape
both have a definite volume
both have an indefinite volume
How does a windmill create electricity?
by transforming solar energy into mechanical energy
by transforming mechanical energy into electrical energy
transforming electrical energy into wind energy
by transforming electrical energy into mechanical energy
Which sentence is NOT a true description of the effect of Earth's gravity on objects?
The closer objects are to Earth, the more affected they are by Earth's gravity.
Only objects that touch Earth are affected by Earth's gravity
Only objects with mass are affected by Earth's gravity
The farther away objects are from Earth, the less affected they are by Earth's gravity
In an investigation, Sara drops an orange from a ladder and watches it fall to the ground. What is the force that pulls the orange to the ground?
mass
gravity
distance
acceleration
Joe had two toy cars. One car had a spring which he wound up before the car would move. The other car did not have a spring, but it needed a battery to work. How are the two cars different?
The two cars transform different kinds of energy into motion.
One car works only on a level surface, and the other car can move up a ramp.
There is no difference between the two cars because they both move forward on a surface
The two cars both transform electrical energy into motion, but they get the electrical energy in different eays.
