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Review for 8th grade LEAP 2025 Science test Flashcards | StudBud
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Review for 8th grade LEAP 2025 Science test
Review for 8th grade LEAP 2025 Science test
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1
If the plants die during a summer drought, the cricket population would most likely
decrease
increase
remain the same
2
Which piece of scientific equipment is used to measure mass?
a ruler
triple beam balance
graduated cylinder
tongs
3
A player hits a baseball with a baseball bat. Which statement about the forces between the ball and the bat is correct
force of the ball on the bat was greater than the force of bat on the ball
force of the ball on bat was less than the force of the bat on the ball.
force of the ball on the bat was equal to the force of the bat on the ball.
4
Which location in the figure shows where opal is
most likely
to form?
Location 2
Location 1
Location 4
Location 3
5
What are the products of photosynthesis?
sugar and carbon dioxide
carbon dioxide and water
sugar and oxygen
oxygen and water
6
Finding fish fossils in the sedimentary rocks means that in the past this area was covered by ...
Ice
Sand
Trees
Water
7
Scientists found some of the same types of rock containing same types of fossil species in Africa & Antarctica. Explain
Both continents gradually increased in size over time
Both continents were attached by glacial ice millions of years ago.
Both continents were underwater millions of years ago.
Both continents were attached but drifted away from each other over time.
8
A tennis ball is dropped down a stairwell. Which statement BEST describes the energy of the tennis ball?
The tennis ball’s kinetic energy decreases as it falls to the ground.
The tennis ball’s potential energy increases as it falls to the ground
The tennis ball has the most kinetic energy as soon as it is dropped.
The tennis ball has the most potential energy just before it is dropped.
9
Wolves help maintain herbivore populations, which keeps _______ from being overeaten.
insects
other wolves
plants
fish
10
The solar system was mostly gas and dust. Which statement best explains how planets formed in the early solar system?
Planets formed from magnetism in space that interacted w/ light from stars.
Planets formed from large asteroids that had broken apart.
Planets formed from molten metal in volcanic eruptions.
Planets form from small amounts of debris attracted together b/c of gravity
11
How many organisms in this food web feed on the mice?
4
3
2
5
12
A student is looking at a model of a neutral atom. It has 19 subatomic particles in the nucleus. Ten are neutral.
It has an atomic mass of 29 amu.
It has an atomic number of 19.
It has 9 protons.
It has 10 electrons.
13
2Fe + 6HC
2
H
3
O
2
→ 2Fe(C
2
H
3
O
2
)
3
+ 3H
2
- How many different elements are in the chemical equation?
3
5
13
2
14
During photosynthesis, plants use what gas to produce glucose as their food?
Oxygen
Nitrogen
Hydrogen
Carbon Dioxide
15
What is one way food chains and energy pyramids are similar?
both are triangles
both show how energy moves through an ecosystem
both show the energy available decreasing as you go up
16
The correct name for this piece of scientific equipment is a
beaker
spatula
measuring cylinder
conical flask
17
Which statement about the sun is true?
It is closer to Earth than any other star.
It is located in the center of the Milky Way galaxy.
It is the hottest star in the universe.
It is the largest type of star known to exist.
18
A student standing the hall cannot see into the classroom but can hear the class discussing science. Explain.
Sound waves transmit through wall, visible light waves are reflected
Sound waves absorbed by the wall, & visible light waves are transmitted
Sound waves are reflected by the wall, and visible light waves are absorb
Sound waves are reflected by the wall, and visible light waves refracted
19
Plate techtonics
studying how the earth's crust moves
studying dishes
studying the difference between continents and oceans
putting things in order from oldest to newest
20
Look at the image below. In which layer will you find the youngest fossils?
Layer 1
Layer 4
Layer 3
Layer 2
21
Which of the following
plant cell organelle
convert light energy to chemical energy through photosynthesis?
leaf
cell wall
mitochondria
chloroplast
22
A student drinks a beverage that contains 78 g of sugar. Which system produces the hormone insulin breaks down sugar
circulatory system
excretory system
respiratory system
endocrine systme
23
student kicks .4 kg soccer ball. The ball traveled a distance of 37m. The acceleration was 2,550 m/s
2
. How many Newtons
14.8 N
1,020 N
69.8 N
6,375.0 N
24
Which organism in this food web is a producer?
grass
snakes
crickets
mice
